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    8200/6100 Intel x553 NIC and certain SFP+ modules

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    • stephenw10S Offline
      stephenw10 Netgate Administrator
      last edited by

      No errors/collisions on the interface (Status > Interfaces) when that happens?

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      • A Offline
        aholmes5 @stephenw10
        last edited by

        @stephenw10 Lots of In errors. No out errors and no collisions.

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        • stephenw10S Offline
          stephenw10 Netgate Administrator
          last edited by

          Interesting. Then check the stats in the sysctl to see what sort of errors they are: sysctl dev.ix.0

          The C3K NICs are limited in the information they can get from modules about the link state. That can mean they negotiate incorrectly or fail to link with some media types. XPON modules that that hide the real link and present to the NIC as something else so there are a few things there that could cause problems.

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          • A Offline
            aholmes5 @stephenw10
            last edited by aholmes5

            @stephenw10 SFP in 8200.txt SFP in switch.txt

            Here is what I have. I don't know how to interpret this. Lots of errors:
            dev.ix.0.mac_stats.rec_len_errs: 20
            dev.ix.0.mac_stats.remote_faults: 0
            dev.ix.0.mac_stats.local_faults: 53
            dev.ix.0.mac_stats.short_discards: 7
            dev.ix.0.mac_stats.byte_errs: 1425
            dev.ix.0.mac_stats.ill_errs: 873
            dev.ix.0.mac_stats.crc_errs: 5468
            dev.ix.0.mac_stats.rx_errs: 6374

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            • stephenw10S Offline
              stephenw10 Netgate Administrator
              last edited by

              Mmm, interesting no one type....

              Check netstat -m make sure there's no buffer exhaustion happening.

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              • A Offline
                aholmes5 @stephenw10
                last edited by

                @stephenw10
                58799/4456/63255 mbufs in use (current/cache/total)
                49273/3559/52832/1000000 mbuf clusters in use (current/cache/total/max)
                3/2029 mbuf+clusters out of packet secondary zone in use (current/cache)
                0/1524/1524/524288 4k (page size) jumbo clusters in use (current/cache/total/max)
                0/0/0/524288 9k jumbo clusters in use (current/cache/total/max)
                0/0/0/84161 16k jumbo clusters in use (current/cache/total/max)
                113245K/14328K/127573K bytes allocated to network (current/cache/total)
                0/0/0 requests for mbufs denied (mbufs/clusters/mbuf+clusters)
                0/0/0 requests for mbufs delayed (mbufs/clusters/mbuf+clusters)
                0/0/0 requests for jumbo clusters delayed (4k/9k/16k)
                0/0/0 requests for jumbo clusters denied (4k/9k/16k)
                0 sendfile syscalls
                0 sendfile syscalls completed without I/O request
                0 requests for I/O initiated by sendfile
                0 pages read by sendfile as part of a request
                0 pages were valid at time of a sendfile request
                0 pages were valid and substituted to bogus page
                0 pages were requested for read ahead by applications
                0 pages were read ahead by sendfile
                0 times sendfile encountered an already busy page
                0 requests for sfbufs denied
                0 requests for sfbufs delayed

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                • L Offline
                  lio1503
                  last edited by

                  Hi @aholmes5

                  I have the same issue. I connect my Fiber WAN on SFP+ 10G on netgate 6100 with a 10GTEK sfp+10G and my unifi switch on the second WAN on SFP+ 10G on netgate 6100 with DAC 10G cable but my download speed is reduce of 80% but my upload is fine.
                  Do you found a solution ?

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                  • stephenw10S Offline
                    stephenw10 Netgate Administrator
                    last edited by

                    Are you seeing errors on the interfaces?

                    Do you have any traffic shaping?

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                    • L Offline
                      lio1503 @stephenw10
                      last edited by lio1503

                      @stephenw10
                      I see some error on interfaces and no traffic shaping configured.

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                      • L Offline
                        lio1503
                        last edited by

                        Screenshot 2025-08-06 203441.png

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                        • stephenw10S Offline
                          stephenw10 Netgate Administrator
                          last edited by

                          No errors shown there. So some on the WAN?

                          How are you testing the throughput?

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                          • L Offline
                            lio1503 @stephenw10
                            last edited by

                            @stephenw10

                            I put the wrong image sorry

                            netgate1.png netgate2.png netgate3.png

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                            • stephenw10S Offline
                              stephenw10 Netgate Administrator
                              last edited by

                              Hmm, not really a significant number there. Nothing that would cause throttling to that extent.

                              What about the PPPoE parent interface? Which I assume is ix0?
                              Try: netstat -i and ifconfig -v ix0

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                              • L Offline
                                lio1503 @stephenw10
                                last edited by

                                Hi @stephenw10

                                Here the result of commands

                                Screenshot 2025-08-08 112744.png

                                Screenshot 2025-08-08 112955.png

                                Thanks

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                                • stephenw10S Offline
                                  stephenw10 Netgate Administrator
                                  last edited by

                                  Ok huge number of input errors on ix0. That's what you'd expect for bad downloads.

                                  You have an XPON module in there I assume? Can you access that to get stats?

                                  You can check the sysctl output for ix0 to see what type of errors those are: sysctl dev.ix.0

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