Netgate Discussion Forum
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Search
    • Register
    • Login

    CARP preempt does't work

    Scheduled Pinned Locked Moved HA/CARP/VIPs
    18 Posts 3 Posters 1.7k Views
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • DerelictD
      Derelict LAYER 8 Netgate
      last edited by

      How are you taking an interface physically down on a VM?

      Chattanooga, Tennessee, USA
      A comprehensive network diagram is worth 10,000 words and 15 conference calls.
      DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
      Do Not Chat For Help! NO_WAN_EGRESS(TM)

      1 Reply Last reply Reply Quote 0
      • M
        mylos
        last edited by

        On the SG-3100 I've tried unplugging the cables or taking the interface down.
        On the VM I've taken the interface down.
        Always the same result, master fails to slave correctly but only for the failed interface and not both (LAN and WAN).
        It doesn't matter which interface I let fail (LAN or WAN), the other never switch together (WAN or respectively LAN)

        1 Reply Last reply Reply Quote 0
        • DerelictD
          Derelict LAYER 8 Netgate
          last edited by Derelict

          What is being logged by the node on which you are unplugging the device?

          It will be in the General system log.

          No, preemption is not broken so we need to figure out why yours is not working. Note that pfSense needs to see actual carrier down. I expect this might be problematic using the SG-3100 LAN switch ports and VM interfaces.

          The logs you are looking for will look similar to this:

          Mar 12 15:53:40 pfSense check_reload_status: Linkup starting igb2
Mar 12 15:53:40 pfSense kernel: igb2: link state changed to DOWN
Mar 12 15:53:41 pfSense check_reload_status: Reloading filter
Mar 12 15:54:10 pfSense kernel: igb3: link state changed to DOWN
Mar 12 15:54:10 pfSense kernel: carp: 13@lagg0: MASTER -> INIT (hardware interface down)
Mar 12 15:54:10 pfSense kernel: carp: demoted by 240 to 240 (interface down)
Mar 12 15:54:10 pfSense kernel: lagg0: link state changed to DOWN
Mar 12 15:54:10 pfSense kernel: carp: 14@lagg1: MASTER -> BACKUP (more frequent advertisement received)

          Note the CARP interface going down demotes the node to advskew 240 which makes the other CARP VIP "slower" than the secondary at 100 so it assumes BACKUP state too. (That is an LACP lagg so it doesn't actually go DOWN until igb2 and igb3 lose link.)

          Chattanooga, Tennessee, USA
          A comprehensive network diagram is worth 10,000 words and 15 conference calls.
          DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
          Do Not Chat For Help! NO_WAN_EGRESS(TM)

          1 Reply Last reply Reply Quote 0
          • jimpJ
            jimp Rebel Alliance Developer Netgate
            last edited by

            It's probably this: https://redmine.pfsense.org/issues/8815

            Remember: Upvote with the 👍 button for any user/post you find to be helpful, informative, or deserving of recognition!

            Need help fast? Netgate Global Support!

            Do not Chat/PM for help!

            1 Reply Last reply Reply Quote 1
            • M
              mylos
              last edited by

              Hier is the log for the Master when unplugging the cable

              Mar 12 17:08:12 syslogd kernel boot file is /boot/kernel/kernel
              Mar 12 17:08:17 firewall1.localdomain nginx: 2019/03/12 17:08:17 [error] 87042#100091: send() failed (54: Connection reset by peer)
              Mar 12 17:08:27 check_reload_status Carp backup event
              Mar 12 17:08:27 kernel carp: 1@mvneta2: MASTER -> INIT (hardware interface down)
              Mar 12 17:08:27 kernel carp: demoted by 240 to 240 (interface down)
              Mar 12 17:08:27 kernel mvneta2: link state changed to DOWN
              Mar 12 17:08:27 kernel carp: 2@mvneta1: MASTER -> BACKUP (more frequent advertisement received)
              Mar 12 17:08:27 kernel ifa_maintain_loopback_route: deletion failed for interface mvneta1: 3
              Mar 12 17:08:27 check_reload_status Linkup starting mvneta2
              Mar 12 17:08:27 check_reload_status Carp backup event
              Mar 12 17:08:28 php-fpm 248 /rc.linkup: DEVD Ethernet detached event for wan
              Mar 12 17:08:28 php-fpm 42160 /rc.carpbackup: HA cluster member "(10.0.5.82@mvneta2): (WAN)" has resumed CARP state "BACKUP" for vhid 1
              Mar 12 17:08:28 kernel ifa_maintain_loopback_route: deletion failed for interface mvneta2: 3
              Mar 12 17:08:28 kernel ifa_maintain_loopback_route: deletion failed for interface mvneta2: 3
              Mar 12 17:08:28 kernel carp: demoted by -240 to 0 (vhid removed)
              Mar 12 17:08:28 kernel mvneta2: promiscuous mode disabled
              Mar 12 17:08:28 php-fpm 247 /rc.carpbackup: HA cluster member "(10.0.0.1@mvneta1): (LAN)" has resumed CARP state "BACKUP" for vhid 2
              Mar 12 17:08:28 check_reload_status Carp master event
              Mar 12 17:08:28 kernel carp: 2@mvneta1: BACKUP -> MASTER (preempting a slower master)
              Mar 12 17:08:28 kernel arp: 10.0.0.1 moved from 00:00:5e:00:01:02 to 00:08:a2:0e:10:f0 on mvneta1
              Mar 12 17:08:29 php-cgi notify_monitor.php: Could not send the message to xxxxxx-- Error: Failed to connect to xxxxxxx:25 [SMTP: Failed to connect socket: php_network_getaddresses: getaddrinfo failed: hostname nor servname provided, or not known (code: -1, response: )]
              Mar 12 17:08:29 php-fpm 32006 /rc.carpmaster: HA cluster member "(10.0.0.1@mvneta1): (LAN)" has resumed CARP state "MASTER" for vhid 2
              Mar 12 17:08:30 php-fpm 248 /rc.linkup: Shutting down Router Advertisment daemon cleanly
              Mar 12 17:08:30 check_reload_status Reloading filter

              Hier the log for the slave

              Mar 12 17:07:55 syslogd kernel boot file is /boot/kernel/kernel
              Mar 12 17:08:25 kernel carp: 2@mvneta1: BACKUP -> MASTER (preempting a slower master)
              Mar 12 17:08:25 check_reload_status Carp master event
              Mar 12 17:08:26 php-fpm 248 /rc.carpmaster: HA cluster member "(10.0.0.1@mvneta1): (LAN)" has resumed CARP state "MASTER" for vhid 2
              Mar 12 17:08:26 check_reload_status Carp backup event
              Mar 12 17:08:26 kernel carp: 2@mvneta1: MASTER -> BACKUP (more frequent advertisement received)
              Mar 12 17:08:26 kernel ifa_maintain_loopback_route: deletion failed for interface mvneta1: 3
              Mar 12 17:08:27 check_reload_status Carp master event
              Mar 12 17:08:27 kernel carp: 1@mvneta2: BACKUP -> MASTER (master timed out)
              Mar 12 17:08:27 php-fpm 91794 /rc.carpbackup: HA cluster member "(10.0.0.1@mvneta1): (LAN)" has resumed CARP state "BACKUP" for vhid 2
              Mar 12 17:08:28 php-fpm 52174 /rc.carpmaster: HA cluster member "(10.0.5.82@mvneta2): (WAN)" has resumed CARP state "MASTER" for vhid 1
              Mar 12 17:08:29 php-cgi notify_monitor.php: Message sent to xxxxxx OK

              1 Reply Last reply Reply Quote 0
              • DerelictD
                Derelict LAYER 8 Netgate
                last edited by

                You'll have to see if the CARP advertisements are actually arriving on the secondary in that case.

                Mar 12 17:08:28 kernel arp: 10.0.0.1 moved from 00:00:5e:00:01:02 to 00:08:a2:0e:10:f0 on mvneta1

                That should never happen. There should never be anything responding to ARP on a CARP VIP with an IS AT anything but the CARP MAC. What is at MAC Address 00:08:a2:0e:10:f0

                Chattanooga, Tennessee, USA
                A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                Do Not Chat For Help! NO_WAN_EGRESS(TM)

                1 Reply Last reply Reply Quote 0
                • M
                  mylos
                  last edited by

                  WAP VIP
                  10.0.5.82 at 0:0:5e:0:1:1
                  WAN Master
                  10.0.5.83 at 0:8:a2:0e:10:4f
                  WAN Slave
                  10.0.5.84 at 0:8:a2:e:10:f1
                  LAN VIP
                  10.0.0.1 at 0:0:5e:0:1:2
                  LAN Master
                  10.0.0.2 at 0:8:a2:e:10:4e
                  LAN Slave
                  10.0.0.3 at 0:8:a2:e:10:f0

                  1 Reply Last reply Reply Quote 0
                  • DerelictD
                    Derelict LAYER 8 Netgate
                    last edited by

                    Take a really good look at the configuration of the secondary.

                    Packet capture a bunch of ARP during failover tests and take a good look at that. There should never be an ARP IS AT response for a CARP VIP that contains an interface MAC as the payload. It will be sourced from the interface MAC but contain the CARP Mac. If there is I would like to see the capture.

                    Chattanooga, Tennessee, USA
                    A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                    DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                    Do Not Chat For Help! NO_WAN_EGRESS(TM)

                    1 Reply Last reply Reply Quote 0
                    • M
                      mylos
                      last edited by

                      Operation: unplug the WAN cable on the Master

                      Packet capture on LAN on slave
                      17:34:48.781554 ARP, Request who-has 10.0.0.1 tell 10.0.0.1, length 28
                      17:34:48.781952 ARP, Reply 10.0.0.1 is-at 00:08:a2:0e:10:4e, length 46
                      17:34:50.173825 ARP, Request who-has 10.0.0.1 tell 10.0.0.1, length 46
                      17:34:50.173860 ARP, Reply 10.0.0.1 is-at 00:08:a2:0e:10:f0, length 28

                      Packet capture on LAN on master
                      17:34:48.783981 ARP, Request who-has 10.0.0.1 tell 10.0.0.1, length 46
                      17:34:48.784012 ARP, Reply 10.0.0.1 is-at 00:08:a2:0e:10:4e, length 28
                      17:34:50.175740 ARP, Request who-has 10.0.0.1 tell 10.0.0.1, length 28
                      17:34:50.176185 ARP, Reply 10.0.0.1 is-at 00:08:a2:0e:10:f0, length 46

                      Slave before failover
                      mvneta1: flags=8b43<UP,BROADCAST,RUNNING,PROMISC,ALLMULTI,SIMPLEX,MULTICAST> metric 0 mtu 1500
                      options=bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM>
                      ether 00:08:a2:0e:10:f0
                      hwaddr 00:08:a2:0e:10:f0
                      inet 10.0.0.3 netmask 0xffffff00 broadcast 10.0.0.255
                      inet 10.0.0.1 netmask 0xffffff00 broadcast 10.0.0.255 vhid 2
                      inet6 fe80::1:1%mvneta1 prefixlen 64 scopeid 0x2
                      carp: BACKUP vhid 2 advbase 1 advskew 100
                      media: Ethernet 2500Base-KX <full-duplex>
                      status: active
                      nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
                      mvneta2: flags=8b43<UP,BROADCAST,RUNNING,PROMISC,ALLMULTI,SIMPLEX,MULTICAST> metric 0 mtu 1500
                      options=800bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,LINKSTATE>
                      ether 00:08:a2:0e:10:f1
                      hwaddr 00:08:a2:0e:10:f1
                      inet6 fe80::208:a2ff:fe0e:10f1%mvneta2 prefixlen 64 scopeid 0x8
                      inet 10.0.5.84 netmask 0xffffff00 broadcast 10.0.5.255
                      inet 10.0.5.82 netmask 0xffffff00 broadcast 10.0.5.255 vhid 1
                      carp: BACKUP vhid 1 advbase 1 advskew 100
                      media: Ethernet autoselect (1000baseT <full-duplex>)
                      status: active
                      nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>

                      Master before failover
                      mvneta1: flags=8b43<UP,BROADCAST,RUNNING,PROMISC,ALLMULTI,SIMPLEX,MULTICAST> metric 0 mtu 1500
                      options=bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM>
                      ether 00:08:a2:0e:10:4e
                      hwaddr 00:08:a2:0e:10:4e
                      inet 10.0.0.2 netmask 0xffffff00 broadcast 10.0.0.255
                      inet 10.0.0.1 netmask 0xffffff00 broadcast 10.0.0.255 vhid 2
                      inet6 fe80::1:1%mvneta1 prefixlen 64 scopeid 0x2
                      carp: MASTER vhid 2 advbase 1 advskew 0
                      media: Ethernet 2500Base-KX <full-duplex>
                      status: active
                      nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
                      mvneta2: flags=8b43<UP,BROADCAST,RUNNING,PROMISC,ALLMULTI,SIMPLEX,MULTICAST> metric 0 mtu 1500
                      options=800bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,LINKSTATE>
                      ether 00:08:a2:0e:10:4f
                      hwaddr 00:08:a2:0e:10:4f
                      inet6 fe80::208:a2ff:fe0e:104f%mvneta2 prefixlen 64 scopeid 0x8
                      inet 10.0.5.83 netmask 0xffffff00 broadcast 10.0.5.255
                      inet 10.0.5.82 netmask 0xffffff00 broadcast 10.0.5.255 vhid 1
                      carp: MASTER vhid 1 advbase 1 advskew 0
                      media: Ethernet autoselect (1000baseT <full-duplex>)
                      status: active
                      nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>

                      slave after failover
                      mvneta1: flags=8b43<UP,BROADCAST,RUNNING,PROMISC,ALLMULTI,SIMPLEX,MULTICAST> metric 0 mtu 1500
                      options=bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM>
                      ether 00:08:a2:0e:10:f0
                      hwaddr 00:08:a2:0e:10:f0
                      inet 10.0.0.3 netmask 0xffffff00 broadcast 10.0.0.255
                      inet 10.0.0.1 netmask 0xffffff00 broadcast 10.0.0.255 vhid 2
                      inet6 fe80::1:1%mvneta1 prefixlen 64 scopeid 0x2
                      carp: BACKUP vhid 2 advbase 1 advskew 100
                      media: Ethernet 2500Base-KX <full-duplex>
                      status: active
                      nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
                      mvneta2: flags=8b43<UP,BROADCAST,RUNNING,PROMISC,ALLMULTI,SIMPLEX,MULTICAST> metric 0 mtu 1500
                      options=800bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,LINKSTATE>
                      ether 00:08:a2:0e:10:f1
                      hwaddr 00:08:a2:0e:10:f1
                      inet6 fe80::208:a2ff:fe0e:10f1%mvneta2 prefixlen 64 scopeid 0x8
                      inet 10.0.5.84 netmask 0xffffff00 broadcast 10.0.5.255
                      inet 10.0.5.82 netmask 0xffffff00 broadcast 10.0.5.255 vhid 1
                      carp: MASTER vhid 1 advbase 1 advskew 100
                      media: Ethernet autoselect (1000baseT <full-duplex>)
                      status: active
                      nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>

                      master after failover
                      mvneta1: flags=8b43<UP,BROADCAST,RUNNING,PROMISC,ALLMULTI,SIMPLEX,MULTICAST> metric 0 mtu 1500
                      options=bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM>
                      ether 00:08:a2:0e:10:4e
                      hwaddr 00:08:a2:0e:10:4e
                      inet 10.0.0.2 netmask 0xffffff00 broadcast 10.0.0.255
                      inet 10.0.0.1 netmask 0xffffff00 broadcast 10.0.0.255 vhid 2
                      inet6 fe80::1:1%mvneta1 prefixlen 64 scopeid 0x2
                      carp: MASTER vhid 2 advbase 1 advskew 0
                      media: Ethernet 2500Base-KX <full-duplex>
                      status: active
                      nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
                      mvneta2: flags=8a43<UP,BROADCAST,RUNNING,ALLMULTI,SIMPLEX,MULTICAST> metric 0 mtu 1500
                      options=800bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,LINKSTATE>
                      ether 00:08:a2:0e:10:4f
                      hwaddr 00:08:a2:0e:10:4f
                      inet6 fe80::208:a2ff:fe0e:104f%mvneta2 prefixlen 64 scopeid 0x8
                      media: Ethernet autoselect (none)
                      status: no carrier
                      nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>

                      1 Reply Last reply Reply Quote 0
                      • DerelictD
                        Derelict LAYER 8 Netgate
                        last edited by

                        @mylos said in CARP preempt does't work:

                        17:34:48.781554 ARP, Request who-has 10.0.0.1 tell 10.0.0.1, length 28

                        That also makes no sense. Does it make sense to you?

                        Please download and post the raw pcap.

                        Chattanooga, Tennessee, USA
                        A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                        DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                        Do Not Chat For Help! NO_WAN_EGRESS(TM)

                        1 Reply Last reply Reply Quote 0
                        • M
                          mylos
                          last edited by

                          Nope does not make any sense for me as well

                          d4c3 b2a1 0200 0400 0000 0000 0000 0000
                          0000 0400 0100 0000 1998 8a5c 2f42 0a00
                          2a00 0000 2a00 0000 ffff ffff ffff 0008
                          a20e 10f0 0806 0001 0800 0604 0001 0000
                          5e00 0102 0a00 0001 0000 0000 0000 0a00
                          0001 1998 8a5c ad43 0a00 3c00 0000 3c00
                          0000 0000 5e00 0102 0008 a20e 104e 0806
                          0001 0800 0604 0002 0008 a20e 104e 0a00
                          0001 0000 5e00 0102 0a00 0001 0000 0000
                          0000 0000 0000 0000 0000 0000 0000 1b98
                          8a5c 06fc 0000 3c00 0000 3c00 0000 ffff
                          ffff ffff 0008 a20e 104e 0806 0001 0800
                          0604 0001 0000 5e00 0102 0a00 0001 0000
                          0000 0000 0a00 0001 0000 0000 0000 0000
                          0000 0000 0000 0000 0000 1b98 8a5c 26fc
                          0000 2a00 0000 2a00 0000 0000 5e00 0102
                          0008 a20e 10f0 0806 0001 0800 0604 0002
                          0008 a20e 10f0 0a00 0001 0000 5e00 0102
                          0a00 0001

                          1 Reply Last reply Reply Quote 0
                          • DerelictD
                            Derelict LAYER 8 Netgate
                            last edited by

                            You will need to attach the capture file.

                            I cannot properly test SG-3100 HA. I only have one unit.

                            Chattanooga, Tennessee, USA
                            A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                            DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                            Do Not Chat For Help! NO_WAN_EGRESS(TM)

                            1 Reply Last reply Reply Quote 0
                            • M
                              mylos
                              last edited by

                              The above is the capture file. Save as hexadecimal as dump.pcap

                              1 Reply Last reply Reply Quote 0
                              • DerelictD
                                Derelict LAYER 8 Netgate
                                last edited by

                                Yeah, no thanks. attach the pcap please.

                                Chattanooga, Tennessee, USA
                                A comprehensive network diagram is worth 10,000 words and 15 conference calls.
                                DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
                                Do Not Chat For Help! NO_WAN_EGRESS(TM)

                                1 Reply Last reply Reply Quote 0
                                • M
                                  mylos
                                  last edited by

                                  0_1552590318279_dump.pcap

                                  1 Reply Last reply Reply Quote 0
                                  • First post
                                    Last post
                                  Copyright 2025 Rubicon Communications LLC (Netgate). All rights reserved.