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    2.1.1/2.1.2 - Unable to connect LAN from power off without firewall reboot

    Scheduled Pinned Locked Moved General pfSense Questions
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    • E
      ESPNSTI
      last edited by

      More information:

      This time I checked "disable all packet filtering" in "System: Advanced: Firewall and NAT" after being unable to connect.
      It did not make a difference, I still couldn't connect.
      FYI, the time the PC was powered off this time was 5 hours.

      However, I re-ran packet captures (with "disable all packet filtering" back to unchecked I think), and I must have done it incorrectly last time, since it showed some traffic this time:

      • On the LAN/BRIDGE0 bridge interface, it shows ARP broadcast requests from the main PC and ARP replies from pfSense LAN/BRIDGE0 to the main PC

      • On the OPT2/em2 interface that the main PC is connected to, it only shows ARP broadcast requests from the main PC, but no replies.

      So for some reason pfSense is able to direct the OPT2/em2 ARP broadcast to LAN/BRIDGE0, but it doesn't  forward the ARP reply from LAN/BRIDGE0 to OPT2/em2.

      I did run a ping from another PC to pfSense to confirm that ARP replies do normally show up on the specific OPT/em interface, and it shows that normally they do.

      FYI, in case it is relevant for this, in "System: Advanced: System Tunables", I have all the settings set at their defaults, except "net.link.bridge.pfil_member" is set to 0 and "net.link.bridge.pfil_bridge" is set to 1.

      1 Reply Last reply Reply Quote 0
      • stephenw10S
        stephenw10 Netgate Administrator
        last edited by

        Hmm. If you run ifconfig at the console do the bridge member interfaces show as 'promiscuous mode'?

        Why are arp replies from LAN not appearing on OPT2? Perhaps because the bridge device thinks it has a route the main PC via some other interface? Maybe try packet captures on other bridge members to see if replies are ending up on the wrong interface. Just speculation.  ;)

        Steve

        1 Reply Last reply Reply Quote 0
        • E
          ESPNSTI
          last edited by

          The first post shows output from ifconfig, it shows PROMISC in the interfaces flags of the bridge member interfaces.
          I will re-run it next time to make sure.

          I will run package captures on the other interfaces next time to see if the replies end up elsewhere.

          Thanks for the suggestions.

          1 Reply Last reply Reply Quote 0
          • E
            ESPNSTI
            last edited by

            Packet captures on other interfaces don't show the missing ARP replies.

            I re-ran ifconfig, and it shows the same info as in the first post.

            However, I had success coaxing the connection back to life without a reboot.

            I ran "ifconfig em2 down" and "ifconfig em2 up" and I think that got it going again.
            However, I am not 100% sure, since I also played around with "ifconfig em2 -promisc" and "ifconfig em2 promisc", but nothing seemed to happen when I ran those.

            Edit:
            Tried it on a different PC, and it's the "ifconfig em3 up" after the "ifconfig em3 down" that does it.

            Here is the log, I ran the ifconfig commands at 07:22:09 and 07:22:13.
            It came back to life shortly after 07:22:13.

            Apr 21 07:22:19 	php: rc.newwanip: Interface does not have an IP address, nothing to do.
            Apr 21 07:22:19 	php: rc.newwanip: rc.newwanip: Informational is starting em3.
            Apr 21 07:22:16 	check_reload_status: rc.newwanip starting em3
            Apr 21 07:22:15 	php: rc.linkup: Hotplug event detected for OPT3(opt3) but ignoring since interface is configured with static IP ( )
            Apr 21 07:22:13 	php: rc.linkup: Hotplug event detected for OPT3(opt3) but ignoring since interface is configured with static IP ( )
            Apr 21 07:22:13 	check_reload_status: Linkup starting em3
            Apr 21 07:22:13 	kernel: em3: link state changed to UP
            Apr 21 07:22:09 	kernel: em3: link state changed to DOWN
            Apr 21 07:22:09 	check_reload_status: Linkup starting em3
            Apr 21 07:20:05 	php: rc.newwanip: Interface does not have an IP address, nothing to do.
            Apr 21 07:20:05 	php: rc.newwanip: rc.newwanip: Informational is starting em3.
            Apr 21 07:20:01 	check_reload_status: rc.newwanip starting em3
            Apr 21 07:20:00 	php: rc.linkup: Hotplug event detected for OPT3(opt3) but ignoring since interface is configured with static IP ( )
            Apr 21 07:19:57 	kernel: em3: link state changed to UP
            Apr 21 07:19:57 	check_reload_status: Linkup starting em3
            
            1 Reply Last reply Reply Quote 0
            • stephenw10S
              stephenw10 Netgate Administrator
              last edited by

              Hmm, interesting. I wonder why the interface stops responding yet nothing in the logs.  :-
              Can you bring the interface back by unplugging and re-plugging the cable?

              Steve

              1 Reply Last reply Reply Quote 0
              • E
                ESPNSTI
                last edited by

                When I tried it in the past, unplugging and re-plugging the cable didn't make a difference, neither did switching to a different port.
                I will try that again though next time.

                I am wondering if it's not some sort of sleep or power saving mode that is enabled in the 2.1.1 nic driver that isn't in 2.1.0 (if such a thing exists)?
                I haven't narrowed down the exact time threshold, but it seems consistent somewhere between 4 and 5 hours, so maybe it's some sort of sleep time setting (although I would think that would be much shorter).

                1 Reply Last reply Reply Quote 0
                • stephenw10S
                  stephenw10 Netgate Administrator
                  last edited by

                  Good question. The em drivers were updated for 2.1.1 so that's a distinct possibility. What are the actual chips in the NICs you have? Anything relevant in hw.em? This looks a likely suspect:

                  [2.1.2-RELEASE][root@pfsense.fire.box]/root(3): sysctl hw.em.smart_pwr_down
                  hw.em.smart_pwr_down: 0
                  

                  Anything suspect in dev.em?

                  Steve

                  1 Reply Last reply Reply Quote 0
                  • E
                    ESPNSTI
                    last edited by

                    The nics are all Intel 82574L.

                    $ sysctl hw.em
                    hw.em.num_queues: 0
                    hw.em.eee_setting: 1
                    hw.em.rx_process_limit: 100
                    hw.em.enable_msix: 1
                    hw.em.sbp: 0
                    hw.em.smart_pwr_down: 0
                    hw.em.txd: 1024
                    hw.em.rxd: 1024
                    hw.em.rx_abs_int_delay: 66
                    hw.em.tx_abs_int_delay: 66
                    hw.em.rx_int_delay: 0
                    hw.em.tx_int_delay: 66
                    
                    $ sysctl dev.em
                    dev.em.0.%desc: Intel(R) PRO/1000 Network Connection 7.3.8
                    dev.em.0.%driver: em
                    dev.em.0.%location: slot=0 function=0
                    dev.em.0.%pnpinfo: vendor=0x8086 device=0x10d3 subvendor=0x8086 subdevice=0x0000 class=0x020000
                    dev.em.0.%parent: pci5
                    dev.em.0.nvm: -1
                    dev.em.0.debug: -1
                    dev.em.0.fc: 3
                    dev.em.0.rx_int_delay: 0
                    dev.em.0.tx_int_delay: 66
                    dev.em.0.rx_abs_int_delay: 66
                    dev.em.0.tx_abs_int_delay: 66
                    dev.em.0.itr: 488
                    dev.em.0.rx_processing_limit: 100
                    dev.em.0.eee_control: 1
                    dev.em.0.link_irq: 3
                    dev.em.0.mbuf_alloc_fail: 0
                    dev.em.0.cluster_alloc_fail: 0
                    dev.em.0.dropped: 0
                    dev.em.0.tx_dma_fail: 0
                    dev.em.0.rx_overruns: 0
                    dev.em.0.watchdog_timeouts: 0
                    dev.em.0.device_control: 1074790984
                    dev.em.0.rx_control: 67141658
                    dev.em.0.fc_high_water: 18432
                    dev.em.0.fc_low_water: 16932
                    dev.em.0.queue0.txd_head: 66
                    dev.em.0.queue0.txd_tail: 66
                    dev.em.0.queue0.tx_irq: 1332941
                    dev.em.0.queue0.no_desc_avail: 0
                    dev.em.0.queue0.rxd_head: 543
                    dev.em.0.queue0.rxd_tail: 542
                    dev.em.0.queue0.rx_irq: 2110549
                    dev.em.0.mac_stats.excess_coll: 0
                    dev.em.0.mac_stats.single_coll: 0
                    dev.em.0.mac_stats.multiple_coll: 0
                    dev.em.0.mac_stats.late_coll: 0
                    dev.em.0.mac_stats.collision_count: 0
                    dev.em.0.mac_stats.symbol_errors: 0
                    dev.em.0.mac_stats.sequence_errors: 0
                    dev.em.0.mac_stats.defer_count: 0
                    dev.em.0.mac_stats.missed_packets: 0
                    dev.em.0.mac_stats.recv_no_buff: 0
                    dev.em.0.mac_stats.recv_undersize: 0
                    dev.em.0.mac_stats.recv_fragmented: 0
                    dev.em.0.mac_stats.recv_oversize: 14
                    dev.em.0.mac_stats.recv_jabber: 0
                    dev.em.0.mac_stats.recv_errs: 1
                    dev.em.0.mac_stats.crc_errs: 1616
                    dev.em.0.mac_stats.alignment_errs: 0
                    dev.em.0.mac_stats.coll_ext_errs: 0
                    dev.em.0.mac_stats.xon_recvd: 0
                    dev.em.0.mac_stats.xon_txd: 0
                    dev.em.0.mac_stats.xoff_recvd: 0
                    dev.em.0.mac_stats.xoff_txd: 0
                    dev.em.0.mac_stats.total_pkts_recvd: 2601085
                    dev.em.0.mac_stats.good_pkts_recvd: 2599455
                    dev.em.0.mac_stats.bcast_pkts_recvd: 86896
                    dev.em.0.mac_stats.mcast_pkts_recvd: 144132
                    dev.em.0.mac_stats.rx_frames_64: 207244
                    dev.em.0.mac_stats.rx_frames_65_127: 839440
                    dev.em.0.mac_stats.rx_frames_128_255: 225214
                    dev.em.0.mac_stats.rx_frames_256_511: 121557
                    dev.em.0.mac_stats.rx_frames_512_1023: 43046
                    dev.em.0.mac_stats.rx_frames_1024_1522: 1162954
                    dev.em.0.mac_stats.good_octets_recvd: 1925347696
                    dev.em.0.mac_stats.good_octets_txd: 265656113
                    dev.em.0.mac_stats.total_pkts_txd: 2281444
                    dev.em.0.mac_stats.good_pkts_txd: 2281444
                    dev.em.0.mac_stats.bcast_pkts_txd: 19
                    dev.em.0.mac_stats.mcast_pkts_txd: 5
                    dev.em.0.mac_stats.tx_frames_64: 401078
                    dev.em.0.mac_stats.tx_frames_65_127: 1682199
                    dev.em.0.mac_stats.tx_frames_128_255: 59450
                    dev.em.0.mac_stats.tx_frames_256_511: 57767
                    dev.em.0.mac_stats.tx_frames_512_1023: 37172
                    dev.em.0.mac_stats.tx_frames_1024_1522: 43778
                    dev.em.0.mac_stats.tso_txd: 0
                    dev.em.0.mac_stats.tso_ctx_fail: 0
                    dev.em.0.interrupts.asserts: 5
                    dev.em.0.interrupts.rx_pkt_timer: 0
                    dev.em.0.interrupts.rx_abs_timer: 0
                    dev.em.0.interrupts.tx_pkt_timer: 0
                    dev.em.0.interrupts.tx_abs_timer: 0
                    dev.em.0.interrupts.tx_queue_empty: 0
                    dev.em.0.interrupts.tx_queue_min_thresh: 0
                    dev.em.0.interrupts.rx_desc_min_thresh: 0
                    dev.em.0.interrupts.rx_overrun: 0
                    dev.em.1.%desc: Intel(R) PRO/1000 Network Connection 7.3.8
                    dev.em.1.%driver: em
                    dev.em.1.%location: slot=0 function=0
                    dev.em.1.%pnpinfo: vendor=0x8086 device=0x10d3 subvendor=0x8086 subdevice=0x0000 class=0x020000
                    dev.em.1.%parent: pci6
                    dev.em.1.nvm: -1
                    dev.em.1.debug: -1
                    dev.em.1.fc: 3
                    dev.em.1.rx_int_delay: 0
                    dev.em.1.tx_int_delay: 66
                    dev.em.1.rx_abs_int_delay: 66
                    dev.em.1.tx_abs_int_delay: 66
                    dev.em.1.itr: 488
                    dev.em.1.rx_processing_limit: 100
                    dev.em.1.eee_control: 1
                    dev.em.1.link_irq: 13
                    dev.em.1.mbuf_alloc_fail: 0
                    dev.em.1.cluster_alloc_fail: 0
                    dev.em.1.dropped: 0
                    dev.em.1.tx_dma_fail: 0
                    dev.em.1.rx_overruns: 0
                    dev.em.1.watchdog_timeouts: 0
                    dev.em.1.device_control: 1477444168
                    dev.em.1.rx_control: 67141658
                    dev.em.1.fc_high_water: 18432
                    dev.em.1.fc_low_water: 16932
                    dev.em.1.queue0.txd_head: 829
                    dev.em.1.queue0.txd_tail: 829
                    dev.em.1.queue0.tx_irq: 1680542
                    dev.em.1.queue0.no_desc_avail: 0
                    dev.em.1.queue0.rxd_head: 18
                    dev.em.1.queue0.rxd_tail: 17
                    dev.em.1.queue0.rx_irq: 1377586
                    dev.em.1.mac_stats.excess_coll: 0
                    dev.em.1.mac_stats.single_coll: 0
                    dev.em.1.mac_stats.multiple_coll: 0
                    dev.em.1.mac_stats.late_coll: 0
                    dev.em.1.mac_stats.collision_count: 0
                    dev.em.1.mac_stats.symbol_errors: 0
                    dev.em.1.mac_stats.sequence_errors: 0
                    dev.em.1.mac_stats.defer_count: 0
                    dev.em.1.mac_stats.missed_packets: 0
                    dev.em.1.mac_stats.recv_no_buff: 0
                    dev.em.1.mac_stats.recv_undersize: 0
                    dev.em.1.mac_stats.recv_fragmented: 0
                    dev.em.1.mac_stats.recv_oversize: 0
                    dev.em.1.mac_stats.recv_jabber: 0
                    dev.em.1.mac_stats.recv_errs: 0
                    dev.em.1.mac_stats.crc_errs: 0
                    dev.em.1.mac_stats.alignment_errs: 0
                    dev.em.1.mac_stats.coll_ext_errs: 0
                    dev.em.1.mac_stats.xon_recvd: 0
                    dev.em.1.mac_stats.xon_txd: 0
                    dev.em.1.mac_stats.xoff_recvd: 0
                    dev.em.1.mac_stats.xoff_txd: 0
                    dev.em.1.mac_stats.total_pkts_recvd: 6054930
                    dev.em.1.mac_stats.good_pkts_recvd: 6054930
                    dev.em.1.mac_stats.bcast_pkts_recvd: 814
                    dev.em.1.mac_stats.mcast_pkts_recvd: 18
                    dev.em.1.mac_stats.rx_frames_64: 3394973
                    dev.em.1.mac_stats.rx_frames_65_127: 1581197
                    dev.em.1.mac_stats.rx_frames_128_255: 145932
                    dev.em.1.mac_stats.rx_frames_256_511: 68688
                    dev.em.1.mac_stats.rx_frames_512_1023: 57308
                    dev.em.1.mac_stats.rx_frames_1024_1522: 806832
                    dev.em.1.mac_stats.good_octets_recvd: 1643667828
                    dev.em.1.mac_stats.good_octets_txd: 10924986586
                    dev.em.1.mac_stats.total_pkts_txd: 8607743
                    dev.em.1.mac_stats.good_pkts_txd: 8607743
                    dev.em.1.mac_stats.bcast_pkts_txd: 16764
                    dev.em.1.mac_stats.mcast_pkts_txd: 8128
                    dev.em.1.mac_stats.tx_frames_64: 435053
                    dev.em.1.mac_stats.tx_frames_65_127: 621579
                    dev.em.1.mac_stats.tx_frames_128_255: 326492
                    dev.em.1.mac_stats.tx_frames_256_511: 104439
                    dev.em.1.mac_stats.tx_frames_512_1023: 44603
                    dev.em.1.mac_stats.tx_frames_1024_1522: 7075577
                    dev.em.1.mac_stats.tso_txd: 0
                    dev.em.1.mac_stats.tso_ctx_fail: 0
                    dev.em.1.interrupts.asserts: 7
                    dev.em.1.interrupts.rx_pkt_timer: 0
                    dev.em.1.interrupts.rx_abs_timer: 0
                    dev.em.1.interrupts.tx_pkt_timer: 0
                    dev.em.1.interrupts.tx_abs_timer: 0
                    dev.em.1.interrupts.tx_queue_empty: 0
                    dev.em.1.interrupts.tx_queue_min_thresh: 0
                    dev.em.1.interrupts.rx_desc_min_thresh: 0
                    dev.em.1.interrupts.rx_overrun: 0
                    dev.em.2.%desc: Intel(R) PRO/1000 Network Connection 7.3.8
                    dev.em.2.%driver: em
                    dev.em.2.%location: slot=0 function=0
                    dev.em.2.%pnpinfo: vendor=0x8086 device=0x10d3 subvendor=0x8086 subdevice=0x0000 class=0x020000
                    dev.em.2.%parent: pci10
                    dev.em.2.nvm: -1
                    dev.em.2.debug: -1
                    dev.em.2.fc: 3
                    dev.em.2.rx_int_delay: 0
                    dev.em.2.tx_int_delay: 66
                    dev.em.2.rx_abs_int_delay: 66
                    dev.em.2.tx_abs_int_delay: 66
                    dev.em.2.itr: 488
                    dev.em.2.rx_processing_limit: 100
                    dev.em.2.eee_control: 1
                    dev.em.2.link_irq: 57
                    dev.em.2.mbuf_alloc_fail: 0
                    dev.em.2.cluster_alloc_fail: 0
                    dev.em.2.dropped: 0
                    dev.em.2.tx_dma_fail: 0
                    dev.em.2.rx_overruns: 0
                    dev.em.2.watchdog_timeouts: 0
                    dev.em.2.device_control: 1074790984
                    dev.em.2.rx_control: 67141658
                    dev.em.2.fc_high_water: 18432
                    dev.em.2.fc_low_water: 16932
                    dev.em.2.queue0.txd_head: 475
                    dev.em.2.queue0.txd_tail: 475
                    dev.em.2.queue0.tx_irq: 1314386
                    dev.em.2.queue0.no_desc_avail: 4
                    dev.em.2.queue0.rxd_head: 565
                    dev.em.2.queue0.rxd_tail: 564
                    dev.em.2.queue0.rx_irq: 1025355
                    dev.em.2.mac_stats.excess_coll: 0
                    dev.em.2.mac_stats.single_coll: 0
                    dev.em.2.mac_stats.multiple_coll: 0
                    dev.em.2.mac_stats.late_coll: 0
                    dev.em.2.mac_stats.collision_count: 0
                    dev.em.2.mac_stats.symbol_errors: 0
                    dev.em.2.mac_stats.sequence_errors: 0
                    dev.em.2.mac_stats.defer_count: 0
                    dev.em.2.mac_stats.missed_packets: 0
                    dev.em.2.mac_stats.recv_no_buff: 0
                    dev.em.2.mac_stats.recv_undersize: 0
                    dev.em.2.mac_stats.recv_fragmented: 0
                    dev.em.2.mac_stats.recv_oversize: 0
                    dev.em.2.mac_stats.recv_jabber: 0
                    dev.em.2.mac_stats.recv_errs: 0
                    dev.em.2.mac_stats.crc_errs: 0
                    dev.em.2.mac_stats.alignment_errs: 0
                    dev.em.2.mac_stats.coll_ext_errs: 0
                    dev.em.2.mac_stats.xon_recvd: 0
                    dev.em.2.mac_stats.xon_txd: 67
                    dev.em.2.mac_stats.xoff_recvd: 0
                    dev.em.2.mac_stats.xoff_txd: 67
                    dev.em.2.mac_stats.total_pkts_recvd: 7579284
                    dev.em.2.mac_stats.good_pkts_recvd: 7579284
                    dev.em.2.mac_stats.bcast_pkts_recvd: 4056
                    dev.em.2.mac_stats.mcast_pkts_recvd: 1894
                    dev.em.2.mac_stats.rx_frames_64: 732927
                    dev.em.2.mac_stats.rx_frames_65_127: 127308
                    dev.em.2.mac_stats.rx_frames_128_255: 236522
                    dev.em.2.mac_stats.rx_frames_256_511: 32858
                    dev.em.2.mac_stats.rx_frames_512_1023: 70604
                    dev.em.2.mac_stats.rx_frames_1024_1522: 6379065
                    dev.em.2.mac_stats.good_octets_recvd: 9847640417
                    dev.em.2.mac_stats.good_octets_txd: 2161810275
                    dev.em.2.mac_stats.total_pkts_txd: 5162048
                    dev.em.2.mac_stats.good_pkts_txd: 5161914
                    dev.em.2.mac_stats.bcast_pkts_txd: 5818
                    dev.em.2.mac_stats.mcast_pkts_txd: 3845
                    dev.em.2.mac_stats.tx_frames_64: 3311268
                    dev.em.2.mac_stats.tx_frames_65_127: 402284
                    dev.em.2.mac_stats.tx_frames_128_255: 129308
                    dev.em.2.mac_stats.tx_frames_256_511: 25539
                    dev.em.2.mac_stats.tx_frames_512_1023: 92406
                    dev.em.2.mac_stats.tx_frames_1024_1522: 1201109
                    dev.em.2.mac_stats.tso_txd: 0
                    dev.em.2.mac_stats.tso_ctx_fail: 0
                    dev.em.2.interrupts.asserts: 36
                    dev.em.2.interrupts.rx_pkt_timer: 0
                    dev.em.2.interrupts.rx_abs_timer: 0
                    dev.em.2.interrupts.tx_pkt_timer: 0
                    dev.em.2.interrupts.tx_abs_timer: 0
                    dev.em.2.interrupts.tx_queue_empty: 0
                    dev.em.2.interrupts.tx_queue_min_thresh: 0
                    dev.em.2.interrupts.rx_desc_min_thresh: 0
                    dev.em.2.interrupts.rx_overrun: 0
                    dev.em.3.%desc: Intel(R) PRO/1000 Network Connection 7.3.8
                    dev.em.3.%driver: em
                    dev.em.3.%location: slot=0 function=0
                    dev.em.3.%pnpinfo: vendor=0x8086 device=0x10d3 subvendor=0x8086 subdevice=0x0000 class=0x020000
                    dev.em.3.%parent: pci11
                    dev.em.3.nvm: -1
                    dev.em.3.debug: -1
                    dev.em.3.fc: 3
                    dev.em.3.rx_int_delay: 0
                    dev.em.3.tx_int_delay: 66
                    dev.em.3.rx_abs_int_delay: 66
                    dev.em.3.tx_abs_int_delay: 66
                    dev.em.3.itr: 488
                    dev.em.3.rx_processing_limit: 100
                    dev.em.3.eee_control: 1
                    dev.em.3.link_irq: 13
                    dev.em.3.mbuf_alloc_fail: 0
                    dev.em.3.cluster_alloc_fail: 0
                    dev.em.3.dropped: 0
                    dev.em.3.tx_dma_fail: 0
                    dev.em.3.rx_overruns: 0
                    dev.em.3.watchdog_timeouts: 0
                    dev.em.3.device_control: 1074790984
                    dev.em.3.rx_control: 67141658
                    dev.em.3.fc_high_water: 18432
                    dev.em.3.fc_low_water: 16932
                    dev.em.3.queue0.txd_head: 386
                    dev.em.3.queue0.txd_tail: 386
                    dev.em.3.queue0.tx_irq: 276
                    dev.em.3.queue0.no_desc_avail: 0
                    dev.em.3.queue0.rxd_head: 218
                    dev.em.3.queue0.rxd_tail: 217
                    dev.em.3.queue0.rx_irq: 978
                    dev.em.3.mac_stats.excess_coll: 0
                    dev.em.3.mac_stats.single_coll: 0
                    dev.em.3.mac_stats.multiple_coll: 0
                    dev.em.3.mac_stats.late_coll: 0
                    dev.em.3.mac_stats.collision_count: 0
                    dev.em.3.mac_stats.symbol_errors: 0
                    dev.em.3.mac_stats.sequence_errors: 0
                    dev.em.3.mac_stats.defer_count: 0
                    dev.em.3.mac_stats.missed_packets: 0
                    dev.em.3.mac_stats.recv_no_buff: 0
                    dev.em.3.mac_stats.recv_undersize: 0
                    dev.em.3.mac_stats.recv_fragmented: 0
                    dev.em.3.mac_stats.recv_oversize: 0
                    dev.em.3.mac_stats.recv_jabber: 0
                    dev.em.3.mac_stats.recv_errs: 0
                    dev.em.3.mac_stats.crc_errs: 0
                    dev.em.3.mac_stats.alignment_errs: 0
                    dev.em.3.mac_stats.coll_ext_errs: 0
                    dev.em.3.mac_stats.xon_recvd: 0
                    dev.em.3.mac_stats.xon_txd: 0
                    dev.em.3.mac_stats.xoff_recvd: 0
                    dev.em.3.mac_stats.xoff_txd: 0
                    dev.em.3.mac_stats.total_pkts_recvd: 979
                    dev.em.3.mac_stats.good_pkts_recvd: 979
                    dev.em.3.mac_stats.bcast_pkts_recvd: 616
                    dev.em.3.mac_stats.mcast_pkts_recvd: 158
                    dev.em.3.mac_stats.rx_frames_64: 63
                    dev.em.3.mac_stats.rx_frames_65_127: 163
                    dev.em.3.mac_stats.rx_frames_128_255: 112
                    dev.em.3.mac_stats.rx_frames_256_511: 641
                    dev.em.3.mac_stats.rx_frames_512_1023: 0
                    dev.em.3.mac_stats.rx_frames_1024_1522: 0
                    dev.em.3.mac_stats.good_octets_recvd: 255346
                    dev.em.3.mac_stats.good_octets_txd: 55615
                    dev.em.3.mac_stats.total_pkts_txd: 303
                    dev.em.3.mac_stats.good_pkts_txd: 303
                    dev.em.3.mac_stats.bcast_pkts_txd: 79
                    dev.em.3.mac_stats.mcast_pkts_txd: 32
                    dev.em.3.mac_stats.tx_frames_64: 32
                    dev.em.3.mac_stats.tx_frames_65_127: 229
                    dev.em.3.mac_stats.tx_frames_128_255: 9
                    dev.em.3.mac_stats.tx_frames_256_511: 14
                    dev.em.3.mac_stats.tx_frames_512_1023: 1
                    dev.em.3.mac_stats.tx_frames_1024_1522: 18
                    dev.em.3.mac_stats.tso_txd: 0
                    dev.em.3.mac_stats.tso_ctx_fail: 0
                    dev.em.3.interrupts.asserts: 9
                    dev.em.3.interrupts.rx_pkt_timer: 0
                    dev.em.3.interrupts.rx_abs_timer: 0
                    dev.em.3.interrupts.tx_pkt_timer: 0
                    dev.em.3.interrupts.tx_abs_timer: 0
                    dev.em.3.interrupts.tx_queue_empty: 0
                    dev.em.3.interrupts.tx_queue_min_thresh: 0
                    dev.em.3.interrupts.rx_desc_min_thresh: 0
                    dev.em.3.interrupts.rx_overrun: 0
                    dev.em.4.%desc: Intel(R) PRO/1000 Network Connection 7.3.8
                    dev.em.4.%driver: em
                    dev.em.4.%location: slot=0 function=0
                    dev.em.4.%pnpinfo: vendor=0x8086 device=0x10d3 subvendor=0x8086 subdevice=0x0000 class=0x020000
                    dev.em.4.%parent: pci15
                    dev.em.4.nvm: -1
                    dev.em.4.debug: -1
                    dev.em.4.fc: 3
                    dev.em.4.rx_int_delay: 0
                    dev.em.4.tx_int_delay: 66
                    dev.em.4.rx_abs_int_delay: 66
                    dev.em.4.tx_abs_int_delay: 66
                    dev.em.4.itr: 488
                    dev.em.4.rx_processing_limit: 100
                    dev.em.4.eee_control: 1
                    dev.em.4.link_irq: 0
                    dev.em.4.mbuf_alloc_fail: 0
                    dev.em.4.cluster_alloc_fail: 0
                    dev.em.4.dropped: 0
                    dev.em.4.tx_dma_fail: 0
                    dev.em.4.rx_overruns: 0
                    dev.em.4.watchdog_timeouts: 0
                    dev.em.4.device_control: 1074790984
                    dev.em.4.rx_control: 67141658
                    dev.em.4.fc_high_water: 18432
                    dev.em.4.fc_low_water: 16932
                    dev.em.4.queue0.txd_head: 0
                    dev.em.4.queue0.txd_tail: 0
                    dev.em.4.queue0.tx_irq: 0
                    dev.em.4.queue0.no_desc_avail: 0
                    dev.em.4.queue0.rxd_head: 0
                    dev.em.4.queue0.rxd_tail: 1023
                    dev.em.4.queue0.rx_irq: 0
                    dev.em.4.mac_stats.excess_coll: 0
                    dev.em.4.mac_stats.single_coll: 0
                    dev.em.4.mac_stats.multiple_coll: 0
                    dev.em.4.mac_stats.late_coll: 0
                    dev.em.4.mac_stats.collision_count: 0
                    dev.em.4.mac_stats.symbol_errors: 0
                    dev.em.4.mac_stats.sequence_errors: 0
                    dev.em.4.mac_stats.defer_count: 0
                    dev.em.4.mac_stats.missed_packets: 0
                    dev.em.4.mac_stats.recv_no_buff: 0
                    dev.em.4.mac_stats.recv_undersize: 0
                    dev.em.4.mac_stats.recv_fragmented: 0
                    dev.em.4.mac_stats.recv_oversize: 0
                    dev.em.4.mac_stats.recv_jabber: 0
                    dev.em.4.mac_stats.recv_errs: 0
                    dev.em.4.mac_stats.crc_errs: 0
                    dev.em.4.mac_stats.alignment_errs: 0
                    dev.em.4.mac_stats.coll_ext_errs: 0
                    dev.em.4.mac_stats.xon_recvd: 0
                    dev.em.4.mac_stats.xon_txd: 0
                    dev.em.4.mac_stats.xoff_recvd: 0
                    dev.em.4.mac_stats.xoff_txd: 0
                    dev.em.4.mac_stats.total_pkts_recvd: 0
                    dev.em.4.mac_stats.good_pkts_recvd: 0
                    dev.em.4.mac_stats.bcast_pkts_recvd: 0
                    dev.em.4.mac_stats.mcast_pkts_recvd: 0
                    dev.em.4.mac_stats.rx_frames_64: 0
                    dev.em.4.mac_stats.rx_frames_65_127: 0
                    dev.em.4.mac_stats.rx_frames_128_255: 0
                    dev.em.4.mac_stats.rx_frames_256_511: 0
                    dev.em.4.mac_stats.rx_frames_512_1023: 0
                    dev.em.4.mac_stats.rx_frames_1024_1522: 0
                    dev.em.4.mac_stats.good_octets_recvd: 0
                    dev.em.4.mac_stats.good_octets_txd: 0
                    dev.em.4.mac_stats.total_pkts_txd: 0
                    dev.em.4.mac_stats.good_pkts_txd: 0
                    dev.em.4.mac_stats.bcast_pkts_txd: 0
                    dev.em.4.mac_stats.mcast_pkts_txd: 0
                    dev.em.4.mac_stats.tx_frames_64: 0
                    dev.em.4.mac_stats.tx_frames_65_127: 0
                    dev.em.4.mac_stats.tx_frames_128_255: 0
                    dev.em.4.mac_stats.tx_frames_256_511: 0
                    dev.em.4.mac_stats.tx_frames_512_1023: 0
                    dev.em.4.mac_stats.tx_frames_1024_1522: 0
                    dev.em.4.mac_stats.tso_txd: 0
                    dev.em.4.mac_stats.tso_ctx_fail: 0
                    dev.em.4.interrupts.asserts: 0
                    dev.em.4.interrupts.rx_pkt_timer: 0
                    dev.em.4.interrupts.rx_abs_timer: 0
                    dev.em.4.interrupts.tx_pkt_timer: 0
                    dev.em.4.interrupts.tx_abs_timer: 0
                    dev.em.4.interrupts.tx_queue_empty: 0
                    dev.em.4.interrupts.tx_queue_min_thresh: 0
                    dev.em.4.interrupts.rx_desc_min_thresh: 0
                    dev.em.4.interrupts.rx_overrun: 0
                    dev.em.5.%desc: Intel(R) PRO/1000 Network Connection 7.3.8
                    dev.em.5.%driver: em
                    dev.em.5.%location: slot=0 function=0
                    dev.em.5.%pnpinfo: vendor=0x8086 device=0x10d3 subvendor=0x8086 subdevice=0x0000 class=0x020000
                    dev.em.5.%parent: pci16
                    dev.em.5.nvm: -1
                    dev.em.5.debug: -1
                    dev.em.5.fc: 3
                    dev.em.5.rx_int_delay: 0
                    dev.em.5.tx_int_delay: 66
                    dev.em.5.rx_abs_int_delay: 66
                    dev.em.5.tx_abs_int_delay: 66
                    dev.em.5.itr: 488
                    dev.em.5.rx_processing_limit: 100
                    dev.em.5.eee_control: 1
                    dev.em.5.link_irq: 14
                    dev.em.5.mbuf_alloc_fail: 0
                    dev.em.5.cluster_alloc_fail: 0
                    dev.em.5.dropped: 0
                    dev.em.5.tx_dma_fail: 0
                    dev.em.5.rx_overruns: 0
                    dev.em.5.watchdog_timeouts: 0
                    dev.em.5.device_control: 1477444168
                    dev.em.5.rx_control: 67141658
                    dev.em.5.fc_high_water: 18432
                    dev.em.5.fc_low_water: 16932
                    dev.em.5.queue0.txd_head: 1015
                    dev.em.5.queue0.txd_tail: 1015
                    dev.em.5.queue0.tx_irq: 31244
                    dev.em.5.queue0.no_desc_avail: 0
                    dev.em.5.queue0.rxd_head: 771
                    dev.em.5.queue0.rxd_tail: 770
                    dev.em.5.queue0.rx_irq: 29384
                    dev.em.5.mac_stats.excess_coll: 0
                    dev.em.5.mac_stats.single_coll: 0
                    dev.em.5.mac_stats.multiple_coll: 0
                    dev.em.5.mac_stats.late_coll: 0
                    dev.em.5.mac_stats.collision_count: 0
                    dev.em.5.mac_stats.symbol_errors: 0
                    dev.em.5.mac_stats.sequence_errors: 0
                    dev.em.5.mac_stats.defer_count: 0
                    dev.em.5.mac_stats.missed_packets: 0
                    dev.em.5.mac_stats.recv_no_buff: 0
                    dev.em.5.mac_stats.recv_undersize: 0
                    dev.em.5.mac_stats.recv_fragmented: 0
                    dev.em.5.mac_stats.recv_oversize: 0
                    dev.em.5.mac_stats.recv_jabber: 0
                    dev.em.5.mac_stats.recv_errs: 0
                    dev.em.5.mac_stats.crc_errs: 0
                    dev.em.5.mac_stats.alignment_errs: 0
                    dev.em.5.mac_stats.coll_ext_errs: 0
                    dev.em.5.mac_stats.xon_recvd: 0
                    dev.em.5.mac_stats.xon_txd: 0
                    dev.em.5.mac_stats.xoff_recvd: 0
                    dev.em.5.mac_stats.xoff_txd: 0
                    dev.em.5.mac_stats.total_pkts_recvd: 29443
                    dev.em.5.mac_stats.good_pkts_recvd: 29443
                    dev.em.5.mac_stats.bcast_pkts_recvd: 10091
                    dev.em.5.mac_stats.mcast_pkts_recvd: 6055
                    dev.em.5.mac_stats.rx_frames_64: 10733
                    dev.em.5.mac_stats.rx_frames_65_127: 10674
                    dev.em.5.mac_stats.rx_frames_128_255: 408
                    dev.em.5.mac_stats.rx_frames_256_511: 6155
                    dev.em.5.mac_stats.rx_frames_512_1023: 409
                    dev.em.5.mac_stats.rx_frames_1024_1522: 1064
                    dev.em.5.mac_stats.good_octets_recvd: 5941407
                    dev.em.5.mac_stats.good_octets_txd: 5567151
                    dev.em.5.mac_stats.total_pkts_txd: 31914
                    dev.em.5.mac_stats.good_pkts_txd: 31914
                    dev.em.5.mac_stats.bcast_pkts_txd: 7475
                    dev.em.5.mac_stats.mcast_pkts_txd: 2087
                    dev.em.5.mac_stats.tx_frames_64: 14358
                    dev.em.5.mac_stats.tx_frames_65_127: 13797
                    dev.em.5.mac_stats.tx_frames_128_255: 790
                    dev.em.5.mac_stats.tx_frames_256_511: 681
                    dev.em.5.mac_stats.tx_frames_512_1023: 274
                    dev.em.5.mac_stats.tx_frames_1024_1522: 2014
                    dev.em.5.mac_stats.tso_txd: 0
                    dev.em.5.mac_stats.tso_ctx_fail: 0
                    dev.em.5.interrupts.asserts: 9
                    dev.em.5.interrupts.rx_pkt_timer: 0
                    dev.em.5.interrupts.rx_abs_timer: 0
                    dev.em.5.interrupts.tx_pkt_timer: 0
                    dev.em.5.interrupts.tx_abs_timer: 0
                    dev.em.5.interrupts.tx_queue_empty: 0
                    dev.em.5.interrupts.tx_queue_min_thresh: 0
                    dev.em.5.interrupts.rx_desc_min_thresh: 0
                    dev.em.5.interrupts.rx_overrun: 0
                    dev.em.6.%desc: Intel(R) PRO/1000 Network Connection 7.3.8
                    dev.em.6.%driver: em
                    dev.em.6.%location: slot=0 function=0
                    dev.em.6.%pnpinfo: vendor=0x8086 device=0x10d3 subvendor=0x8086 subdevice=0x0000 class=0x020000
                    dev.em.6.%parent: pci17
                    dev.em.6.nvm: -1
                    dev.em.6.debug: -1
                    dev.em.6.fc: 3
                    dev.em.6.rx_int_delay: 0
                    dev.em.6.tx_int_delay: 66
                    dev.em.6.rx_abs_int_delay: 66
                    dev.em.6.tx_abs_int_delay: 66
                    dev.em.6.itr: 488
                    dev.em.6.rx_processing_limit: 100
                    dev.em.6.eee_control: 1
                    dev.em.6.link_irq: 17
                    dev.em.6.mbuf_alloc_fail: 0
                    dev.em.6.cluster_alloc_fail: 0
                    dev.em.6.dropped: 0
                    dev.em.6.tx_dma_fail: 0
                    dev.em.6.rx_overruns: 0
                    dev.em.6.watchdog_timeouts: 0
                    dev.em.6.device_control: 1477444168
                    dev.em.6.rx_control: 67141658
                    dev.em.6.fc_high_water: 18432
                    dev.em.6.fc_low_water: 16932
                    dev.em.6.queue0.txd_head: 817
                    dev.em.6.queue0.txd_tail: 817
                    dev.em.6.queue0.tx_irq: 81780
                    dev.em.6.queue0.no_desc_avail: 0
                    dev.em.6.queue0.rxd_head: 348
                    dev.em.6.queue0.rxd_tail: 347
                    dev.em.6.queue0.rx_irq: 36669
                    dev.em.6.mac_stats.excess_coll: 0
                    dev.em.6.mac_stats.single_coll: 0
                    dev.em.6.mac_stats.multiple_coll: 0
                    dev.em.6.mac_stats.late_coll: 0
                    dev.em.6.mac_stats.collision_count: 0
                    dev.em.6.mac_stats.symbol_errors: 0
                    dev.em.6.mac_stats.sequence_errors: 0
                    dev.em.6.mac_stats.defer_count: 0
                    dev.em.6.mac_stats.missed_packets: 0
                    dev.em.6.mac_stats.recv_no_buff: 0
                    dev.em.6.mac_stats.recv_undersize: 0
                    dev.em.6.mac_stats.recv_fragmented: 0
                    dev.em.6.mac_stats.recv_oversize: 0
                    dev.em.6.mac_stats.recv_jabber: 0
                    dev.em.6.mac_stats.recv_errs: 0
                    dev.em.6.mac_stats.crc_errs: 0
                    dev.em.6.mac_stats.alignment_errs: 0
                    dev.em.6.mac_stats.coll_ext_errs: 0
                    dev.em.6.mac_stats.xon_recvd: 0
                    dev.em.6.mac_stats.xon_txd: 0
                    dev.em.6.mac_stats.xoff_recvd: 0
                    dev.em.6.mac_stats.xoff_txd: 0
                    dev.em.6.mac_stats.total_pkts_recvd: 40284
                    dev.em.6.mac_stats.good_pkts_recvd: 40284
                    dev.em.6.mac_stats.bcast_pkts_recvd: 420
                    dev.em.6.mac_stats.mcast_pkts_recvd: 376
                    dev.em.6.mac_stats.rx_frames_64: 28074
                    dev.em.6.mac_stats.rx_frames_65_127: 8076
                    dev.em.6.mac_stats.rx_frames_128_255: 927
                    dev.em.6.mac_stats.rx_frames_256_511: 800
                    dev.em.6.mac_stats.rx_frames_512_1023: 843
                    dev.em.6.mac_stats.rx_frames_1024_1522: 1564
                    dev.em.6.mac_stats.good_octets_recvd: 5925684
                    dev.em.6.mac_stats.good_octets_txd: 87073020
                    dev.em.6.mac_stats.total_pkts_txd: 88589
                    dev.em.6.mac_stats.good_pkts_txd: 88589
                    dev.em.6.mac_stats.bcast_pkts_txd: 17191
                    dev.em.6.mac_stats.mcast_pkts_txd: 7828
                    dev.em.6.mac_stats.tx_frames_64: 15737
                    dev.em.6.mac_stats.tx_frames_65_127: 8968
                    dev.em.6.mac_stats.tx_frames_128_255: 2483
                    dev.em.6.mac_stats.tx_frames_256_511: 6989
                    dev.em.6.mac_stats.tx_frames_512_1023: 704
                    dev.em.6.mac_stats.tx_frames_1024_1522: 53708
                    dev.em.6.mac_stats.tso_txd: 0
                    dev.em.6.mac_stats.tso_ctx_fail: 0
                    dev.em.6.interrupts.asserts: 11
                    dev.em.6.interrupts.rx_pkt_timer: 0
                    dev.em.6.interrupts.rx_abs_timer: 0
                    dev.em.6.interrupts.tx_pkt_timer: 0
                    dev.em.6.interrupts.tx_abs_timer: 0
                    dev.em.6.interrupts.tx_queue_empty: 0
                    dev.em.6.interrupts.tx_queue_min_thresh: 0
                    dev.em.6.interrupts.rx_desc_min_thresh: 0
                    dev.em.6.interrupts.rx_overrun: 0
                    dev.em.7.%desc: Intel(R) PRO/1000 Network Connection 7.3.8
                    dev.em.7.%driver: em
                    dev.em.7.%location: slot=0 function=0
                    dev.em.7.%pnpinfo: vendor=0x8086 device=0x10d3 subvendor=0x8086 subdevice=0x0000 class=0x020000
                    dev.em.7.%parent: pci18
                    dev.em.7.nvm: -1
                    dev.em.7.debug: -1
                    dev.em.7.fc: 3
                    dev.em.7.rx_int_delay: 0
                    dev.em.7.tx_int_delay: 66
                    dev.em.7.rx_abs_int_delay: 66
                    dev.em.7.tx_abs_int_delay: 66
                    dev.em.7.itr: 488
                    dev.em.7.rx_processing_limit: 100
                    dev.em.7.eee_control: 1
                    dev.em.7.link_irq: 0
                    dev.em.7.mbuf_alloc_fail: 0
                    dev.em.7.cluster_alloc_fail: 0
                    dev.em.7.dropped: 0
                    dev.em.7.tx_dma_fail: 0
                    dev.em.7.rx_overruns: 0
                    dev.em.7.watchdog_timeouts: 0
                    dev.em.7.device_control: 1074790984
                    dev.em.7.rx_control: 67141658
                    dev.em.7.fc_high_water: 18432
                    dev.em.7.fc_low_water: 16932
                    dev.em.7.queue0.txd_head: 0
                    dev.em.7.queue0.txd_tail: 0
                    dev.em.7.queue0.tx_irq: 0
                    dev.em.7.queue0.no_desc_avail: 0
                    dev.em.7.queue0.rxd_head: 0
                    dev.em.7.queue0.rxd_tail: 1023
                    dev.em.7.queue0.rx_irq: 0
                    dev.em.7.mac_stats.excess_coll: 0
                    dev.em.7.mac_stats.single_coll: 0
                    dev.em.7.mac_stats.multiple_coll: 0
                    dev.em.7.mac_stats.late_coll: 0
                    dev.em.7.mac_stats.collision_count: 0
                    dev.em.7.mac_stats.symbol_errors: 0
                    dev.em.7.mac_stats.sequence_errors: 0
                    dev.em.7.mac_stats.defer_count: 0
                    dev.em.7.mac_stats.missed_packets: 0
                    dev.em.7.mac_stats.recv_no_buff: 0
                    dev.em.7.mac_stats.recv_undersize: 0
                    dev.em.7.mac_stats.recv_fragmented: 0
                    dev.em.7.mac_stats.recv_oversize: 0
                    dev.em.7.mac_stats.recv_jabber: 0
                    dev.em.7.mac_stats.recv_errs: 0
                    dev.em.7.mac_stats.crc_errs: 0
                    dev.em.7.mac_stats.alignment_errs: 0
                    dev.em.7.mac_stats.coll_ext_errs: 0
                    dev.em.7.mac_stats.xon_recvd: 0
                    dev.em.7.mac_stats.xon_txd: 0
                    dev.em.7.mac_stats.xoff_recvd: 0
                    dev.em.7.mac_stats.xoff_txd: 0
                    dev.em.7.mac_stats.total_pkts_recvd: 0
                    dev.em.7.mac_stats.good_pkts_recvd: 0
                    dev.em.7.mac_stats.bcast_pkts_recvd: 0
                    dev.em.7.mac_stats.mcast_pkts_recvd: 0
                    dev.em.7.mac_stats.rx_frames_64: 0
                    dev.em.7.mac_stats.rx_frames_65_127: 0
                    dev.em.7.mac_stats.rx_frames_128_255: 0
                    dev.em.7.mac_stats.rx_frames_256_511: 0
                    dev.em.7.mac_stats.rx_frames_512_1023: 0
                    dev.em.7.mac_stats.rx_frames_1024_1522: 0
                    dev.em.7.mac_stats.good_octets_recvd: 0
                    dev.em.7.mac_stats.good_octets_txd: 0
                    dev.em.7.mac_stats.total_pkts_txd: 0
                    dev.em.7.mac_stats.good_pkts_txd: 0
                    dev.em.7.mac_stats.bcast_pkts_txd: 0
                    dev.em.7.mac_stats.mcast_pkts_txd: 0
                    dev.em.7.mac_stats.tx_frames_64: 0
                    dev.em.7.mac_stats.tx_frames_65_127: 0
                    dev.em.7.mac_stats.tx_frames_128_255: 0
                    dev.em.7.mac_stats.tx_frames_256_511: 0
                    dev.em.7.mac_stats.tx_frames_512_1023: 0
                    dev.em.7.mac_stats.tx_frames_1024_1522: 0
                    dev.em.7.mac_stats.tso_txd: 0
                    dev.em.7.mac_stats.tso_ctx_fail: 0
                    dev.em.7.interrupts.asserts: 0
                    dev.em.7.interrupts.rx_pkt_timer: 0
                    dev.em.7.interrupts.rx_abs_timer: 0
                    dev.em.7.interrupts.tx_pkt_timer: 0
                    dev.em.7.interrupts.tx_abs_timer: 0
                    dev.em.7.interrupts.tx_queue_empty: 0
                    dev.em.7.interrupts.tx_queue_min_thresh: 0
                    dev.em.7.interrupts.rx_desc_min_thresh: 0
                    dev.em.7.interrupts.rx_overrun: 0
                    

                    I'm not sure what to watch for.
                    FYI, this was not taken while the problem was occurring.

                    1 Reply Last reply Reply Quote 0
                    • stephenw10S
                      stephenw10 Netgate Administrator
                      last edited by

                      Hmm, very common NIC so should be reported if it was a driver issue.
                      You have a lot of CRC errors on em0. Which interface is giving trouble?
                      Try to get a set of data when it's stopped responding.

                      Steve

                      1 Reply Last reply Reply Quote 0
                      • E
                        ESPNSTI
                        last edited by

                        The nic may be common, but perhaps not a lot of people use pfsense the way I do?
                        Meaning, directly connecting PCs to the pfSense box rather than having a switch in the middle, in combination with completely unplugging the PC rather than leaving it powered off, but not unplugged.

                        My main PC is connected to em2, but I have reproduced the problem with it connected to other interfaces and with other PCs on other interfaces.

                        My WAN interface is em0, which is connected using WiMAX, don't  know if that explains the number of CRC errors or not.

                        I will try to get dev.em data the next time the problem happens.

                        Edit:

                        I tried unplugging and re-plugging the connection, that does not seem to solve the problem, but ifconfig em2 down followed by ifconfig em2 up does.

                        Here is the dev.em data while the problem happens:

                        $ sysctl dev.em
                        dev.em.0.%desc: Intel(R) PRO/1000 Network Connection 7.3.8
                        dev.em.0.%driver: em
                        dev.em.0.%location: slot=0 function=0
                        dev.em.0.%pnpinfo: vendor=0x8086 device=0x10d3 subvendor=0x8086 subdevice=0x0000 class=0x020000
                        dev.em.0.%parent: pci5
                        dev.em.0.nvm: -1
                        dev.em.0.debug: -1
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                        dev.em.2.%desc: Intel(R) PRO/1000 Network Connection 7.3.8
                        dev.em.2.%driver: em
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                        dev.em.3.%desc: Intel(R) PRO/1000 Network Connection 7.3.8
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                        dev.em.3.mac_stats.total_pkts_recvd: 979
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                        dev.em.3.mac_stats.good_octets_txd: 55615
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                        dev.em.4.%desc: Intel(R) PRO/1000 Network Connection 7.3.8
                        dev.em.4.%driver: em
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                        dev.em.4.mac_stats.tx_frames_65_127: 0
                        dev.em.4.mac_stats.tx_frames_128_255: 0
                        dev.em.4.mac_stats.tx_frames_256_511: 0
                        dev.em.4.mac_stats.tx_frames_512_1023: 0
                        dev.em.4.mac_stats.tx_frames_1024_1522: 0
                        dev.em.4.mac_stats.tso_txd: 0
                        dev.em.4.mac_stats.tso_ctx_fail: 0
                        dev.em.4.interrupts.asserts: 0
                        dev.em.4.interrupts.rx_pkt_timer: 0
                        dev.em.4.interrupts.rx_abs_timer: 0
                        dev.em.4.interrupts.tx_pkt_timer: 0
                        dev.em.4.interrupts.tx_abs_timer: 0
                        dev.em.4.interrupts.tx_queue_empty: 0
                        dev.em.4.interrupts.tx_queue_min_thresh: 0
                        dev.em.4.interrupts.rx_desc_min_thresh: 0
                        dev.em.4.interrupts.rx_overrun: 0
                        dev.em.5.%desc: Intel(R) PRO/1000 Network Connection 7.3.8
                        dev.em.5.%driver: em
                        dev.em.5.%location: slot=0 function=0
                        dev.em.5.%pnpinfo: vendor=0x8086 device=0x10d3 subvendor=0x8086 subdevice=0x0000 class=0x020000
                        dev.em.5.%parent: pci16
                        dev.em.5.nvm: -1
                        dev.em.5.debug: -1
                        dev.em.5.fc: 3
                        dev.em.5.rx_int_delay: 0
                        dev.em.5.tx_int_delay: 66
                        dev.em.5.rx_abs_int_delay: 66
                        dev.em.5.tx_abs_int_delay: 66
                        dev.em.5.itr: 488
                        dev.em.5.rx_processing_limit: 100
                        dev.em.5.eee_control: 1
                        dev.em.5.link_irq: 14
                        dev.em.5.mbuf_alloc_fail: 0
                        dev.em.5.cluster_alloc_fail: 0
                        dev.em.5.dropped: 0
                        dev.em.5.tx_dma_fail: 0
                        dev.em.5.rx_overruns: 0
                        dev.em.5.watchdog_timeouts: 0
                        dev.em.5.device_control: 1477444168
                        dev.em.5.rx_control: 67141658
                        dev.em.5.fc_high_water: 18432
                        dev.em.5.fc_low_water: 16932
                        dev.em.5.queue0.txd_head: 118
                        dev.em.5.queue0.txd_tail: 118
                        dev.em.5.queue0.tx_irq: 35021
                        dev.em.5.queue0.no_desc_avail: 0
                        dev.em.5.queue0.rxd_head: 813
                        dev.em.5.queue0.rxd_tail: 812
                        dev.em.5.queue0.rx_irq: 33522
                        dev.em.5.mac_stats.excess_coll: 0
                        dev.em.5.mac_stats.single_coll: 0
                        dev.em.5.mac_stats.multiple_coll: 0
                        dev.em.5.mac_stats.late_coll: 0
                        dev.em.5.mac_stats.collision_count: 0
                        dev.em.5.mac_stats.symbol_errors: 0
                        dev.em.5.mac_stats.sequence_errors: 0
                        dev.em.5.mac_stats.defer_count: 0
                        dev.em.5.mac_stats.missed_packets: 0
                        dev.em.5.mac_stats.recv_no_buff: 0
                        dev.em.5.mac_stats.recv_undersize: 0
                        dev.em.5.mac_stats.recv_fragmented: 0
                        dev.em.5.mac_stats.recv_oversize: 0
                        dev.em.5.mac_stats.recv_jabber: 0
                        dev.em.5.mac_stats.recv_errs: 0
                        dev.em.5.mac_stats.crc_errs: 0
                        dev.em.5.mac_stats.alignment_errs: 0
                        dev.em.5.mac_stats.coll_ext_errs: 0
                        dev.em.5.mac_stats.xon_recvd: 0
                        dev.em.5.mac_stats.xon_txd: 0
                        dev.em.5.mac_stats.xoff_recvd: 0
                        dev.em.5.mac_stats.xoff_txd: 0
                        dev.em.5.mac_stats.total_pkts_recvd: 33581
                        dev.em.5.mac_stats.good_pkts_recvd: 33581
                        dev.em.5.mac_stats.bcast_pkts_recvd: 13190
                        dev.em.5.mac_stats.mcast_pkts_recvd: 6958
                        dev.em.5.mac_stats.rx_frames_64: 13832
                        dev.em.5.mac_stats.rx_frames_65_127: 10806
                        dev.em.5.mac_stats.rx_frames_128_255: 408
                        dev.em.5.mac_stats.rx_frames_256_511: 7058
                        dev.em.5.mac_stats.rx_frames_512_1023: 413
                        dev.em.5.mac_stats.rx_frames_1024_1522: 1064
                        dev.em.5.mac_stats.good_octets_recvd: 6533199
                        dev.em.5.mac_stats.good_octets_txd: 5861382
                        dev.em.5.mac_stats.total_pkts_txd: 35811
                        dev.em.5.mac_stats.good_pkts_txd: 35811
                        dev.em.5.mac_stats.bcast_pkts_txd: 8074
                        dev.em.5.mac_stats.mcast_pkts_txd: 2154
                        dev.em.5.mac_stats.tx_frames_64: 17797
                        dev.em.5.mac_stats.tx_frames_65_127: 14125
                        dev.em.5.mac_stats.tx_frames_128_255: 859
                        dev.em.5.mac_stats.tx_frames_256_511: 716
                        dev.em.5.mac_stats.tx_frames_512_1023: 294
                        dev.em.5.mac_stats.tx_frames_1024_1522: 2020
                        dev.em.5.mac_stats.tso_txd: 0
                        dev.em.5.mac_stats.tso_ctx_fail: 0
                        dev.em.5.interrupts.asserts: 9
                        dev.em.5.interrupts.rx_pkt_timer: 0
                        dev.em.5.interrupts.rx_abs_timer: 0
                        dev.em.5.interrupts.tx_pkt_timer: 0
                        dev.em.5.interrupts.tx_abs_timer: 0
                        dev.em.5.interrupts.tx_queue_empty: 0
                        dev.em.5.interrupts.tx_queue_min_thresh: 0
                        dev.em.5.interrupts.rx_desc_min_thresh: 0
                        dev.em.5.interrupts.rx_overrun: 0
                        dev.em.6.%desc: Intel(R) PRO/1000 Network Connection 7.3.8
                        dev.em.6.%driver: em
                        dev.em.6.%location: slot=0 function=0
                        dev.em.6.%pnpinfo: vendor=0x8086 device=0x10d3 subvendor=0x8086 subdevice=0x0000 class=0x020000
                        dev.em.6.%parent: pci17
                        dev.em.6.nvm: -1
                        dev.em.6.debug: -1
                        dev.em.6.fc: 3
                        dev.em.6.rx_int_delay: 0
                        dev.em.6.tx_int_delay: 66
                        dev.em.6.rx_abs_int_delay: 66
                        dev.em.6.tx_abs_int_delay: 66
                        dev.em.6.itr: 488
                        dev.em.6.rx_processing_limit: 100
                        dev.em.6.eee_control: 1
                        dev.em.6.link_irq: 22
                        dev.em.6.mbuf_alloc_fail: 0
                        dev.em.6.cluster_alloc_fail: 0
                        dev.em.6.dropped: 0
                        dev.em.6.tx_dma_fail: 0
                        dev.em.6.rx_overruns: 0
                        dev.em.6.watchdog_timeouts: 0
                        dev.em.6.device_control: 1477444168
                        dev.em.6.rx_control: 67141658
                        dev.em.6.fc_high_water: 18432
                        dev.em.6.fc_low_water: 16932
                        dev.em.6.queue0.txd_head: 172
                        dev.em.6.queue0.txd_tail: 172
                        dev.em.6.queue0.tx_irq: 86612
                        dev.em.6.queue0.no_desc_avail: 0
                        dev.em.6.queue0.rxd_head: 886
                        dev.em.6.queue0.rxd_tail: 885
                        dev.em.6.queue0.rx_irq: 37129
                        dev.em.6.mac_stats.excess_coll: 0
                        dev.em.6.mac_stats.single_coll: 0
                        dev.em.6.mac_stats.multiple_coll: 0
                        dev.em.6.mac_stats.late_coll: 0
                        dev.em.6.mac_stats.collision_count: 0
                        dev.em.6.mac_stats.symbol_errors: 0
                        dev.em.6.mac_stats.sequence_errors: 0
                        dev.em.6.mac_stats.defer_count: 0
                        dev.em.6.mac_stats.missed_packets: 0
                        dev.em.6.mac_stats.recv_no_buff: 0
                        dev.em.6.mac_stats.recv_undersize: 0
                        dev.em.6.mac_stats.recv_fragmented: 0
                        dev.em.6.mac_stats.recv_oversize: 0
                        dev.em.6.mac_stats.recv_jabber: 0
                        dev.em.6.mac_stats.recv_errs: 0
                        dev.em.6.mac_stats.crc_errs: 0
                        dev.em.6.mac_stats.alignment_errs: 0
                        dev.em.6.mac_stats.coll_ext_errs: 0
                        dev.em.6.mac_stats.xon_recvd: 0
                        dev.em.6.mac_stats.xon_txd: 0
                        dev.em.6.mac_stats.xoff_recvd: 0
                        dev.em.6.mac_stats.xoff_txd: 0
                        dev.em.6.mac_stats.total_pkts_recvd: 40822
                        dev.em.6.mac_stats.good_pkts_recvd: 40822
                        dev.em.6.mac_stats.bcast_pkts_recvd: 538
                        dev.em.6.mac_stats.mcast_pkts_recvd: 445
                        dev.em.6.mac_stats.rx_frames_64: 28322
                        dev.em.6.mac_stats.rx_frames_65_127: 8188
                        dev.em.6.mac_stats.rx_frames_128_255: 966
                        dev.em.6.mac_stats.rx_frames_256_511: 818
                        dev.em.6.mac_stats.rx_frames_512_1023: 957
                        dev.em.6.mac_stats.rx_frames_1024_1522: 1571
                        dev.em.6.mac_stats.good_octets_recvd: 6040146
                        dev.em.6.mac_stats.good_octets_txd: 88048854
                        dev.em.6.mac_stats.total_pkts_txd: 93690
                        dev.em.6.mac_stats.good_pkts_txd: 93690
                        dev.em.6.mac_stats.bcast_pkts_txd: 20785
                        dev.em.6.mac_stats.mcast_pkts_txd: 8747
                        dev.em.6.mac_stats.tx_frames_64: 19296
                        dev.em.6.mac_stats.tx_frames_65_127: 9220
                        dev.em.6.mac_stats.tx_frames_128_255: 2549
                        dev.em.6.mac_stats.tx_frames_256_511: 7998
                        dev.em.6.mac_stats.tx_frames_512_1023: 746
                        dev.em.6.mac_stats.tx_frames_1024_1522: 53881
                        dev.em.6.mac_stats.tso_txd: 0
                        dev.em.6.mac_stats.tso_ctx_fail: 0
                        dev.em.6.interrupts.asserts: 14
                        dev.em.6.interrupts.rx_pkt_timer: 0
                        dev.em.6.interrupts.rx_abs_timer: 0
                        dev.em.6.interrupts.tx_pkt_timer: 0
                        dev.em.6.interrupts.tx_abs_timer: 0
                        dev.em.6.interrupts.tx_queue_empty: 0
                        dev.em.6.interrupts.tx_queue_min_thresh: 0
                        dev.em.6.interrupts.rx_desc_min_thresh: 0
                        dev.em.6.interrupts.rx_overrun: 0
                        dev.em.7.%desc: Intel(R) PRO/1000 Network Connection 7.3.8
                        dev.em.7.%driver: em
                        dev.em.7.%location: slot=0 function=0
                        dev.em.7.%pnpinfo: vendor=0x8086 device=0x10d3 subvendor=0x8086 subdevice=0x0000 class=0x020000
                        dev.em.7.%parent: pci18
                        dev.em.7.nvm: -1
                        dev.em.7.debug: -1
                        dev.em.7.fc: 3
                        dev.em.7.rx_int_delay: 0
                        dev.em.7.tx_int_delay: 66
                        dev.em.7.rx_abs_int_delay: 66
                        dev.em.7.tx_abs_int_delay: 66
                        dev.em.7.itr: 488
                        dev.em.7.rx_processing_limit: 100
                        dev.em.7.eee_control: 1
                        dev.em.7.link_irq: 0
                        dev.em.7.mbuf_alloc_fail: 0
                        dev.em.7.cluster_alloc_fail: 0
                        dev.em.7.dropped: 0
                        dev.em.7.tx_dma_fail: 0
                        dev.em.7.rx_overruns: 0
                        dev.em.7.watchdog_timeouts: 0
                        dev.em.7.device_control: 1074790984
                        dev.em.7.rx_control: 67141658
                        dev.em.7.fc_high_water: 18432
                        dev.em.7.fc_low_water: 16932
                        dev.em.7.queue0.txd_head: 0
                        dev.em.7.queue0.txd_tail: 0
                        dev.em.7.queue0.tx_irq: 0
                        dev.em.7.queue0.no_desc_avail: 0
                        dev.em.7.queue0.rxd_head: 0
                        dev.em.7.queue0.rxd_tail: 1023
                        dev.em.7.queue0.rx_irq: 0
                        dev.em.7.mac_stats.excess_coll: 0
                        dev.em.7.mac_stats.single_coll: 0
                        dev.em.7.mac_stats.multiple_coll: 0
                        dev.em.7.mac_stats.late_coll: 0
                        dev.em.7.mac_stats.collision_count: 0
                        dev.em.7.mac_stats.symbol_errors: 0
                        dev.em.7.mac_stats.sequence_errors: 0
                        dev.em.7.mac_stats.defer_count: 0
                        dev.em.7.mac_stats.missed_packets: 0
                        dev.em.7.mac_stats.recv_no_buff: 0
                        dev.em.7.mac_stats.recv_undersize: 0
                        dev.em.7.mac_stats.recv_fragmented: 0
                        dev.em.7.mac_stats.recv_oversize: 0
                        dev.em.7.mac_stats.recv_jabber: 0
                        dev.em.7.mac_stats.recv_errs: 0
                        dev.em.7.mac_stats.crc_errs: 0
                        dev.em.7.mac_stats.alignment_errs: 0
                        dev.em.7.mac_stats.coll_ext_errs: 0
                        dev.em.7.mac_stats.xon_recvd: 0
                        dev.em.7.mac_stats.xon_txd: 0
                        dev.em.7.mac_stats.xoff_recvd: 0
                        dev.em.7.mac_stats.xoff_txd: 0
                        dev.em.7.mac_stats.total_pkts_recvd: 0
                        dev.em.7.mac_stats.good_pkts_recvd: 0
                        dev.em.7.mac_stats.bcast_pkts_recvd: 0
                        dev.em.7.mac_stats.mcast_pkts_recvd: 0
                        dev.em.7.mac_stats.rx_frames_64: 0
                        dev.em.7.mac_stats.rx_frames_65_127: 0
                        dev.em.7.mac_stats.rx_frames_128_255: 0
                        dev.em.7.mac_stats.rx_frames_256_511: 0
                        dev.em.7.mac_stats.rx_frames_512_1023: 0
                        dev.em.7.mac_stats.rx_frames_1024_1522: 0
                        dev.em.7.mac_stats.good_octets_recvd: 0
                        dev.em.7.mac_stats.good_octets_txd: 0
                        dev.em.7.mac_stats.total_pkts_txd: 0
                        dev.em.7.mac_stats.good_pkts_txd: 0
                        dev.em.7.mac_stats.bcast_pkts_txd: 0
                        dev.em.7.mac_stats.mcast_pkts_txd: 0
                        dev.em.7.mac_stats.tx_frames_64: 0
                        dev.em.7.mac_stats.tx_frames_65_127: 0
                        dev.em.7.mac_stats.tx_frames_128_255: 0
                        dev.em.7.mac_stats.tx_frames_256_511: 0
                        dev.em.7.mac_stats.tx_frames_512_1023: 0
                        dev.em.7.mac_stats.tx_frames_1024_1522: 0
                        dev.em.7.mac_stats.tso_txd: 0
                        dev.em.7.mac_stats.tso_ctx_fail: 0
                        dev.em.7.interrupts.asserts: 0
                        dev.em.7.interrupts.rx_pkt_timer: 0
                        dev.em.7.interrupts.rx_abs_timer: 0
                        dev.em.7.interrupts.tx_pkt_timer: 0
                        dev.em.7.interrupts.tx_abs_timer: 0
                        dev.em.7.interrupts.tx_queue_empty: 0
                        dev.em.7.interrupts.tx_queue_min_thresh: 0
                        dev.em.7.interrupts.rx_desc_min_thresh: 0
                        dev.em.7.interrupts.rx_overrun: 0
                        

                        And this is shortly after, having revived the connection using ifconfig:

                        $ sysctl dev.em
                        dev.em.0.%desc: Intel(R) PRO/1000 Network Connection 7.3.8
                        dev.em.0.%driver: em
                        dev.em.0.%location: slot=0 function=0
                        dev.em.0.%pnpinfo: vendor=0x8086 device=0x10d3 subvendor=0x8086 subdevice=0x0000 class=0x020000
                        dev.em.0.%parent: pci5
                        dev.em.0.nvm: -1
                        dev.em.0.debug: -1
                        dev.em.0.fc: 3
                        dev.em.0.rx_int_delay: 0
                        dev.em.0.tx_int_delay: 66
                        dev.em.0.rx_abs_int_delay: 66
                        dev.em.0.tx_abs_int_delay: 66
                        dev.em.0.itr: 488
                        dev.em.0.rx_processing_limit: 100
                        dev.em.0.eee_control: 1
                        dev.em.0.link_irq: 3
                        dev.em.0.mbuf_alloc_fail: 0
                        dev.em.0.cluster_alloc_fail: 0
                        dev.em.0.dropped: 0
                        dev.em.0.tx_dma_fail: 0
                        dev.em.0.rx_overruns: 0
                        dev.em.0.watchdog_timeouts: 0
                        dev.em.0.device_control: 1074790984
                        dev.em.0.rx_control: 67141658
                        dev.em.0.fc_high_water: 18432
                        dev.em.0.fc_low_water: 16932
                        dev.em.0.queue0.txd_head: 685
                        dev.em.0.queue0.txd_tail: 685
                        dev.em.0.queue0.tx_irq: 1353736
                        dev.em.0.queue0.no_desc_avail: 0
                        dev.em.0.queue0.rxd_head: 676
                        dev.em.0.queue0.rxd_tail: 675
                        dev.em.0.queue0.rx_irq: 2196823
                        dev.em.0.mac_stats.excess_coll: 0
                        dev.em.0.mac_stats.single_coll: 0
                        dev.em.0.mac_stats.multiple_coll: 0
                        dev.em.0.mac_stats.late_coll: 0
                        dev.em.0.mac_stats.collision_count: 0
                        dev.em.0.mac_stats.symbol_errors: 0
                        dev.em.0.mac_stats.sequence_errors: 0
                        dev.em.0.mac_stats.defer_count: 0
                        dev.em.0.mac_stats.missed_packets: 0
                        dev.em.0.mac_stats.recv_no_buff: 0
                        dev.em.0.mac_stats.recv_undersize: 0
                        dev.em.0.mac_stats.recv_fragmented: 0
                        dev.em.0.mac_stats.recv_oversize: 14
                        dev.em.0.mac_stats.recv_jabber: 0
                        dev.em.0.mac_stats.recv_errs: 1
                        dev.em.0.mac_stats.crc_errs: 1864
                        dev.em.0.mac_stats.alignment_errs: 0
                        dev.em.0.mac_stats.coll_ext_errs: 0
                        dev.em.0.mac_stats.xon_recvd: 0
                        dev.em.0.mac_stats.xon_txd: 0
                        dev.em.0.mac_stats.xoff_recvd: 0
                        dev.em.0.mac_stats.xoff_txd: 0
                        dev.em.0.mac_stats.total_pkts_recvd: 2695671
                        dev.em.0.mac_stats.good_pkts_recvd: 2693793
                        dev.em.0.mac_stats.bcast_pkts_recvd: 115211
                        dev.em.0.mac_stats.mcast_pkts_recvd: 170573
                        dev.em.0.mac_stats.rx_frames_64: 231428
                        dev.em.0.mac_stats.rx_frames_65_127: 881736
                        dev.em.0.mac_stats.rx_frames_128_255: 240428
                        dev.em.0.mac_stats.rx_frames_256_511: 127402
                        dev.em.0.mac_stats.rx_frames_512_1023: 43918
                        dev.em.0.mac_stats.rx_frames_1024_1522: 1168881
                        dev.em.0.mac_stats.good_octets_recvd: 1944697083
                        dev.em.0.mac_stats.good_octets_txd: 267511513
                        dev.em.0.mac_stats.total_pkts_txd: 2302538
                        dev.em.0.mac_stats.good_pkts_txd: 2302538
                        dev.em.0.mac_stats.bcast_pkts_txd: 21
                        dev.em.0.mac_stats.mcast_pkts_txd: 5
                        dev.em.0.mac_stats.tx_frames_64: 401423
                        dev.em.0.mac_stats.tx_frames_65_127: 1702538
                        dev.em.0.mac_stats.tx_frames_128_255: 59586
                        dev.em.0.mac_stats.tx_frames_256_511: 57937
                        dev.em.0.mac_stats.tx_frames_512_1023: 37227
                        dev.em.0.mac_stats.tx_frames_1024_1522: 43827
                        dev.em.0.mac_stats.tso_txd: 0
                        dev.em.0.mac_stats.tso_ctx_fail: 0
                        dev.em.0.interrupts.asserts: 5
                        dev.em.0.interrupts.rx_pkt_timer: 0
                        dev.em.0.interrupts.rx_abs_timer: 0
                        dev.em.0.interrupts.tx_pkt_timer: 0
                        dev.em.0.interrupts.tx_abs_timer: 0
                        dev.em.0.interrupts.tx_queue_empty: 0
                        dev.em.0.interrupts.tx_queue_min_thresh: 0
                        dev.em.0.interrupts.rx_desc_min_thresh: 0
                        dev.em.0.interrupts.rx_overrun: 0
                        dev.em.1.%desc: Intel(R) PRO/1000 Network Connection 7.3.8
                        dev.em.1.%driver: em
                        dev.em.1.%location: slot=0 function=0
                        dev.em.1.%pnpinfo: vendor=0x8086 device=0x10d3 subvendor=0x8086 subdevice=0x0000 class=0x020000
                        dev.em.1.%parent: pci6
                        dev.em.1.nvm: -1
                        dev.em.1.debug: -1
                        dev.em.1.fc: 3
                        dev.em.1.rx_int_delay: 0
                        dev.em.1.tx_int_delay: 66
                        dev.em.1.rx_abs_int_delay: 66
                        dev.em.1.tx_abs_int_delay: 66
                        dev.em.1.itr: 488
                        dev.em.1.rx_processing_limit: 100
                        dev.em.1.eee_control: 1
                        dev.em.1.link_irq: 22
                        dev.em.1.mbuf_alloc_fail: 0
                        dev.em.1.cluster_alloc_fail: 0
                        dev.em.1.dropped: 0
                        dev.em.1.tx_dma_fail: 0
                        dev.em.1.rx_overruns: 0
                        dev.em.1.watchdog_timeouts: 0
                        dev.em.1.device_control: 1477444168
                        dev.em.1.rx_control: 67141658
                        dev.em.1.fc_high_water: 18432
                        dev.em.1.fc_low_water: 16932
                        dev.em.1.queue0.txd_head: 839
                        dev.em.1.queue0.txd_tail: 839
                        dev.em.1.queue0.tx_irq: 1691646
                        dev.em.1.queue0.no_desc_avail: 0
                        dev.em.1.queue0.rxd_head: 100
                        dev.em.1.queue0.rxd_tail: 99
                        dev.em.1.queue0.rx_irq: 1381613
                        dev.em.1.mac_stats.excess_coll: 0
                        dev.em.1.mac_stats.single_coll: 0
                        dev.em.1.mac_stats.multiple_coll: 0
                        dev.em.1.mac_stats.late_coll: 0
                        dev.em.1.mac_stats.collision_count: 0
                        dev.em.1.mac_stats.symbol_errors: 0
                        dev.em.1.mac_stats.sequence_errors: 0
                        dev.em.1.mac_stats.defer_count: 0
                        dev.em.1.mac_stats.missed_packets: 0
                        dev.em.1.mac_stats.recv_no_buff: 0
                        dev.em.1.mac_stats.recv_undersize: 0
                        dev.em.1.mac_stats.recv_fragmented: 0
                        dev.em.1.mac_stats.recv_oversize: 0
                        dev.em.1.mac_stats.recv_jabber: 0
                        dev.em.1.mac_stats.recv_errs: 0
                        dev.em.1.mac_stats.crc_errs: 0
                        dev.em.1.mac_stats.alignment_errs: 0
                        dev.em.1.mac_stats.coll_ext_errs: 0
                        dev.em.1.mac_stats.xon_recvd: 0
                        dev.em.1.mac_stats.xon_txd: 0
                        dev.em.1.mac_stats.xoff_recvd: 0
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                        dev.em.1.mac_stats.good_pkts_recvd: 6059107
                        dev.em.1.mac_stats.bcast_pkts_recvd: 1003
                        dev.em.1.mac_stats.mcast_pkts_recvd: 36
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                        dev.em.1.mac_stats.rx_frames_1024_1522: 806832
                        dev.em.1.mac_stats.good_octets_recvd: 1644015882
                        dev.em.1.mac_stats.good_octets_txd: 10934440772
                        dev.em.1.mac_stats.total_pkts_txd: 8619016
                        dev.em.1.mac_stats.good_pkts_txd: 8619016
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                        dev.em.1.mac_stats.mcast_pkts_txd: 9162
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                        dev.em.2.%desc: Intel(R) PRO/1000 Network Connection 7.3.8
                        dev.em.2.%driver: em
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                        dev.em.2.mac_stats.total_pkts_recvd: 7579992
                        dev.em.2.mac_stats.good_pkts_recvd: 7579992
                        dev.em.2.mac_stats.bcast_pkts_recvd: 4530
                        dev.em.2.mac_stats.mcast_pkts_recvd: 1960
                        dev.em.2.mac_stats.rx_frames_64: 733376
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                        dev.em.2.mac_stats.rx_frames_1024_1522: 6379075
                        dev.em.2.mac_stats.good_octets_recvd: 9847706051
                        dev.em.2.mac_stats.good_octets_txd: 2161839705
                        dev.em.2.mac_stats.total_pkts_txd: 5162265
                        dev.em.2.mac_stats.good_pkts_txd: 5162131
                        dev.em.2.mac_stats.bcast_pkts_txd: 5846
                        dev.em.2.mac_stats.mcast_pkts_txd: 3858
                        dev.em.2.mac_stats.tx_frames_64: 3311306
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                        dev.em.3.%desc: Intel(R) PRO/1000 Network Connection 7.3.8
                        dev.em.3.%driver: em
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                        dev.em.3.queue0.txd_head: 386
                        dev.em.3.queue0.txd_tail: 386
                        dev.em.3.queue0.tx_irq: 276
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                        dev.em.3.queue0.rxd_head: 218
                        dev.em.3.queue0.rxd_tail: 217
                        dev.em.3.queue0.rx_irq: 978
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                        dev.em.3.mac_stats.total_pkts_recvd: 979
                        dev.em.3.mac_stats.good_pkts_recvd: 979
                        dev.em.3.mac_stats.bcast_pkts_recvd: 616
                        dev.em.3.mac_stats.mcast_pkts_recvd: 158
                        dev.em.3.mac_stats.rx_frames_64: 63
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                        dev.em.3.mac_stats.rx_frames_128_255: 112
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                        dev.em.3.mac_stats.good_octets_recvd: 255346
                        dev.em.3.mac_stats.good_octets_txd: 55615
                        dev.em.3.mac_stats.total_pkts_txd: 303
                        dev.em.3.mac_stats.good_pkts_txd: 303
                        dev.em.3.mac_stats.bcast_pkts_txd: 79
                        dev.em.3.mac_stats.mcast_pkts_txd: 32
                        dev.em.3.mac_stats.tx_frames_64: 32
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                        dev.em.4.%desc: Intel(R) PRO/1000 Network Connection 7.3.8
                        dev.em.4.%driver: em
                        dev.em.4.%location: slot=0 function=0
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                        dev.em.5.%desc: Intel(R) PRO/1000 Network Connection 7.3.8
                        dev.em.5.%driver: em
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                        dev.em.5.eee_control: 1
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                        dev.em.5.queue0.txd_head: 908
                        dev.em.5.queue0.txd_tail: 908
                        dev.em.5.queue0.tx_irq: 35644
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                        dev.em.5.queue0.rxd_head: 913
                        dev.em.5.queue0.rxd_tail: 912
                        dev.em.5.queue0.rx_irq: 33622
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                        dev.em.5.mac_stats.xoff_recvd: 0
                        dev.em.5.mac_stats.xoff_txd: 0
                        dev.em.5.mac_stats.total_pkts_recvd: 33681
                        dev.em.5.mac_stats.good_pkts_recvd: 33681
                        dev.em.5.mac_stats.bcast_pkts_recvd: 13265
                        dev.em.5.mac_stats.mcast_pkts_recvd: 6979
                        dev.em.5.mac_stats.rx_frames_64: 13907
                        dev.em.5.mac_stats.rx_frames_65_127: 10809
                        dev.em.5.mac_stats.rx_frames_128_255: 408
                        dev.em.5.mac_stats.rx_frames_256_511: 7079
                        dev.em.5.mac_stats.rx_frames_512_1023: 414
                        dev.em.5.mac_stats.rx_frames_1024_1522: 1064
                        dev.em.5.mac_stats.good_octets_recvd: 6547683
                        dev.em.5.mac_stats.good_octets_txd: 5926006
                        dev.em.5.mac_stats.total_pkts_txd: 36476
                        dev.em.5.mac_stats.good_pkts_txd: 36476
                        dev.em.5.mac_stats.bcast_pkts_txd: 8603
                        dev.em.5.mac_stats.mcast_pkts_txd: 2211
                        dev.em.5.mac_stats.tx_frames_64: 18335
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                        dev.em.5.mac_stats.tx_frames_128_255: 870
                        dev.em.5.mac_stats.tx_frames_256_511: 719
                        dev.em.5.mac_stats.tx_frames_512_1023: 306
                        dev.em.5.mac_stats.tx_frames_1024_1522: 2030
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                        dev.em.5.interrupts.asserts: 9
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                        dev.em.6.%desc: Intel(R) PRO/1000 Network Connection 7.3.8
                        dev.em.6.%driver: em
                        dev.em.6.%location: slot=0 function=0
                        dev.em.6.%pnpinfo: vendor=0x8086 device=0x10d3 subvendor=0x8086 subdevice=0x0000 class=0x020000
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                        dev.em.6.itr: 488
                        dev.em.6.rx_processing_limit: 100
                        dev.em.6.eee_control: 1
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                        dev.em.6.queue0.txd_head: 103
                        dev.em.6.queue0.txd_tail: 103
                        dev.em.6.queue0.tx_irq: 87586
                        dev.em.6.queue0.no_desc_avail: 0
                        dev.em.6.queue0.rxd_head: 840
                        dev.em.6.queue0.rxd_tail: 839
                        dev.em.6.queue0.rx_irq: 37860
                        dev.em.6.mac_stats.excess_coll: 0
                        dev.em.6.mac_stats.single_coll: 0
                        dev.em.6.mac_stats.multiple_coll: 0
                        dev.em.6.mac_stats.late_coll: 0
                        dev.em.6.mac_stats.collision_count: 0
                        dev.em.6.mac_stats.symbol_errors: 0
                        dev.em.6.mac_stats.sequence_errors: 0
                        dev.em.6.mac_stats.defer_count: 0
                        dev.em.6.mac_stats.missed_packets: 0
                        dev.em.6.mac_stats.recv_no_buff: 0
                        dev.em.6.mac_stats.recv_undersize: 0
                        dev.em.6.mac_stats.recv_fragmented: 0
                        dev.em.6.mac_stats.recv_oversize: 0
                        dev.em.6.mac_stats.recv_jabber: 0
                        dev.em.6.mac_stats.recv_errs: 0
                        dev.em.6.mac_stats.crc_errs: 0
                        dev.em.6.mac_stats.alignment_errs: 0
                        dev.em.6.mac_stats.coll_ext_errs: 0
                        dev.em.6.mac_stats.xon_recvd: 0
                        dev.em.6.mac_stats.xon_txd: 0
                        dev.em.6.mac_stats.xoff_recvd: 0
                        dev.em.6.mac_stats.xoff_txd: 0
                        dev.em.6.mac_stats.total_pkts_recvd: 41796
                        dev.em.6.mac_stats.good_pkts_recvd: 41796
                        dev.em.6.mac_stats.bcast_pkts_recvd: 755
                        dev.em.6.mac_stats.mcast_pkts_recvd: 454
                        dev.em.6.mac_stats.rx_frames_64: 29124
                        dev.em.6.mac_stats.rx_frames_65_127: 8291
                        dev.em.6.mac_stats.rx_frames_128_255: 984
                        dev.em.6.mac_stats.rx_frames_256_511: 824
                        dev.em.6.mac_stats.rx_frames_512_1023: 993
                        dev.em.6.mac_stats.rx_frames_1024_1522: 1580
                        dev.em.6.mac_stats.good_octets_recvd: 6142890
                        dev.em.6.mac_stats.good_octets_txd: 89550641
                        dev.em.6.mac_stats.total_pkts_txd: 95436
                        dev.em.6.mac_stats.good_pkts_txd: 95436
                        dev.em.6.mac_stats.bcast_pkts_txd: 21172
                        dev.em.6.mac_stats.mcast_pkts_txd: 8816
                        dev.em.6.mac_stats.tx_frames_64: 19702
                        dev.em.6.mac_stats.tx_frames_65_127: 9482
                        dev.em.6.mac_stats.tx_frames_128_255: 2561
                        dev.em.6.mac_stats.tx_frames_256_511: 8128
                        dev.em.6.mac_stats.tx_frames_512_1023: 765
                        dev.em.6.mac_stats.tx_frames_1024_1522: 54798
                        dev.em.6.mac_stats.tso_txd: 0
                        dev.em.6.mac_stats.tso_ctx_fail: 0
                        dev.em.6.interrupts.asserts: 14
                        dev.em.6.interrupts.rx_pkt_timer: 0
                        dev.em.6.interrupts.rx_abs_timer: 0
                        dev.em.6.interrupts.tx_pkt_timer: 0
                        dev.em.6.interrupts.tx_abs_timer: 0
                        dev.em.6.interrupts.tx_queue_empty: 0
                        dev.em.6.interrupts.tx_queue_min_thresh: 0
                        dev.em.6.interrupts.rx_desc_min_thresh: 0
                        dev.em.6.interrupts.rx_overrun: 0
                        dev.em.7.%desc: Intel(R) PRO/1000 Network Connection 7.3.8
                        dev.em.7.%driver: em
                        dev.em.7.%location: slot=0 function=0
                        dev.em.7.%pnpinfo: vendor=0x8086 device=0x10d3 subvendor=0x8086 subdevice=0x0000 class=0x020000
                        dev.em.7.%parent: pci18
                        dev.em.7.nvm: -1
                        dev.em.7.debug: -1
                        dev.em.7.fc: 3
                        dev.em.7.rx_int_delay: 0
                        dev.em.7.tx_int_delay: 66
                        dev.em.7.rx_abs_int_delay: 66
                        dev.em.7.tx_abs_int_delay: 66
                        dev.em.7.itr: 488
                        dev.em.7.rx_processing_limit: 100
                        dev.em.7.eee_control: 1
                        dev.em.7.link_irq: 0
                        dev.em.7.mbuf_alloc_fail: 0
                        dev.em.7.cluster_alloc_fail: 0
                        dev.em.7.dropped: 0
                        dev.em.7.tx_dma_fail: 0
                        dev.em.7.rx_overruns: 0
                        dev.em.7.watchdog_timeouts: 0
                        dev.em.7.device_control: 1074790984
                        dev.em.7.rx_control: 67141658
                        dev.em.7.fc_high_water: 18432
                        dev.em.7.fc_low_water: 16932
                        dev.em.7.queue0.txd_head: 0
                        dev.em.7.queue0.txd_tail: 0
                        dev.em.7.queue0.tx_irq: 0
                        dev.em.7.queue0.no_desc_avail: 0
                        dev.em.7.queue0.rxd_head: 0
                        dev.em.7.queue0.rxd_tail: 1023
                        dev.em.7.queue0.rx_irq: 0
                        dev.em.7.mac_stats.excess_coll: 0
                        dev.em.7.mac_stats.single_coll: 0
                        dev.em.7.mac_stats.multiple_coll: 0
                        dev.em.7.mac_stats.late_coll: 0
                        dev.em.7.mac_stats.collision_count: 0
                        dev.em.7.mac_stats.symbol_errors: 0
                        dev.em.7.mac_stats.sequence_errors: 0
                        dev.em.7.mac_stats.defer_count: 0
                        dev.em.7.mac_stats.missed_packets: 0
                        dev.em.7.mac_stats.recv_no_buff: 0
                        dev.em.7.mac_stats.recv_undersize: 0
                        dev.em.7.mac_stats.recv_fragmented: 0
                        dev.em.7.mac_stats.recv_oversize: 0
                        dev.em.7.mac_stats.recv_jabber: 0
                        dev.em.7.mac_stats.recv_errs: 0
                        dev.em.7.mac_stats.crc_errs: 0
                        dev.em.7.mac_stats.alignment_errs: 0
                        dev.em.7.mac_stats.coll_ext_errs: 0
                        dev.em.7.mac_stats.xon_recvd: 0
                        dev.em.7.mac_stats.xon_txd: 0
                        dev.em.7.mac_stats.xoff_recvd: 0
                        dev.em.7.mac_stats.xoff_txd: 0
                        dev.em.7.mac_stats.total_pkts_recvd: 0
                        dev.em.7.mac_stats.good_pkts_recvd: 0
                        dev.em.7.mac_stats.bcast_pkts_recvd: 0
                        dev.em.7.mac_stats.mcast_pkts_recvd: 0
                        dev.em.7.mac_stats.rx_frames_64: 0
                        dev.em.7.mac_stats.rx_frames_65_127: 0
                        dev.em.7.mac_stats.rx_frames_128_255: 0
                        dev.em.7.mac_stats.rx_frames_256_511: 0
                        dev.em.7.mac_stats.rx_frames_512_1023: 0
                        dev.em.7.mac_stats.rx_frames_1024_1522: 0
                        dev.em.7.mac_stats.good_octets_recvd: 0
                        dev.em.7.mac_stats.good_octets_txd: 0
                        dev.em.7.mac_stats.total_pkts_txd: 0
                        dev.em.7.mac_stats.good_pkts_txd: 0
                        dev.em.7.mac_stats.bcast_pkts_txd: 0
                        dev.em.7.mac_stats.mcast_pkts_txd: 0
                        dev.em.7.mac_stats.tx_frames_64: 0
                        dev.em.7.mac_stats.tx_frames_65_127: 0
                        dev.em.7.mac_stats.tx_frames_128_255: 0
                        dev.em.7.mac_stats.tx_frames_256_511: 0
                        dev.em.7.mac_stats.tx_frames_512_1023: 0
                        dev.em.7.mac_stats.tx_frames_1024_1522: 0
                        dev.em.7.mac_stats.tso_txd: 0
                        dev.em.7.mac_stats.tso_ctx_fail: 0
                        dev.em.7.interrupts.asserts: 0
                        dev.em.7.interrupts.rx_pkt_timer: 0
                        dev.em.7.interrupts.rx_abs_timer: 0
                        dev.em.7.interrupts.tx_pkt_timer: 0
                        dev.em.7.interrupts.tx_abs_timer: 0
                        dev.em.7.interrupts.tx_queue_empty: 0
                        dev.em.7.interrupts.tx_queue_min_thresh: 0
                        dev.em.7.interrupts.rx_desc_min_thresh: 0
                        dev.em.7.interrupts.rx_overrun: 0
                        
                        1 Reply Last reply Reply Quote 0
                        • stephenw10S
                          stephenw10 Netgate Administrator
                          last edited by

                          I have a box that is quite similar in many ways, same NICs, and I often use it as you do, without a switch. I too have all six em NICs bridged together. However I haven't done so recently as I'm using as a test box with 2.2. Thinking back I'm not sure if I ever had that arrangement with 2.1.1/2.
                          Interestingly I have experienced very similar behavior on that box but not on the em interfaces, on its one fxp NIC. That NIC will not negotiate a connection if it is powered up before the machine at the other end. In that case it was a harware (perhaps firmware) level issue where it would fail to negotiate a speed and duplex wiht the NIC at the other end resulting in no link. The link LED would flash intermittently as it tried and failed. It has no problem doing it it the other end is already powered up. I never found a good solution to it but you work around it by manually setting the link speed and duplex. Try that.

                          Steve

                          1 Reply Last reply Reply Quote 0
                          • E
                            ESPNSTI
                            last edited by

                            I have played around with nic settings on the connecting PC before, and that didn't seem to make a difference, but I will try that again.

                            I looked at some of the differences between the em drivers in 2.1.0 and 2.1.2.
                            In 2.1.2 the version is 7.3.8, I think 2.1.0 might be 7.3.2.
                            One thing I noticed is that the hw.em.eee_setting (Energy Efficient Ethernet) default might have changed.
                            It now seems to default to 1 and I think it defaulted to 0 before.
                            However I can't figure out by the somewhat cryptic code if that means it's now enabled or disabled.
                            Anyway, I set hw.em.eee_setting=0 in /boot/loader.conf.local and rebooted, but that unfortunately didn't fix it.

                            1 Reply Last reply Reply Quote 0
                            • stephenw10S
                              stephenw10 Netgate Administrator
                              last edited by

                              Damn that seems like a great suspect. The sysctl had changed after boot?

                              In my case you could see the NIC wasn't making a connection as ifconfig showed 'no carrier' I don't belive you're seeing that though.

                              Steve

                              1 Reply Last reply Reply Quote 0
                              • E
                                ESPNSTI
                                last edited by

                                After the reboot, sysctl did show eee_setting as 0.

                                Edit: I tried changing the link speed and duplex of the connecting PC, and that made no difference.

                                There are some tests included in the Windows nic driver that I ran, and during the time the problem occurs, they all succeed except for the connection test.

                                ![Cable Test.gif](/public/imported_attachments/1/Cable Test.gif)
                                ![Cable Test.gif_thumb](/public/imported_attachments/1/Cable Test.gif_thumb)
                                ![Hardware Test.gif](/public/imported_attachments/1/Hardware Test.gif)
                                ![Hardware Test.gif_thumb](/public/imported_attachments/1/Hardware Test.gif_thumb)

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