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    Packet Loss

    Scheduled Pinned Locked Moved 2.0-RC Snapshot Feedback and Problems - RETIRED
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    • C
      cmb
      last edited by

      Running out of states maybe? Though the state table is sized dynamically based on RAM in 2.0, so with 4 GB RAM that would leave you with a huge state table, so that's highly unlikely.

      Leave a constant ping going in a SSH session and see if you're seeing loss there as well.

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      • T
        thermionic
        last edited by

        Hi,

        With no traffic (the only connections to it were from my laptop) going over it, we were seeing packet loss to the LAN switch on the gateway "applet" from the front page. This was confirmed by pinging it from my laptop which was also connected to the same switch and also seeing ICMP packet loss, as well as experiencing the web front end become unresponsive while the local console (via iLo) was still fine.

        With 4GB of memory, the automatically sized state table was quite big :-) however as there was no traffic going over it, just my laptop connecting to it, the number of states was <1% of the available.

        When I swapped it out for the DC5100MT desktop PC, I backed up and restored the config file, connected it to the same switch port, and had no issues. When I tested the DL385 with Windows (2k8 x86) I was able to run iPerf and saturate the 1GB link while pinging it and still have no packet loss. I also ran a full set of HP diagnostics under windows, and it passed with no errors.

        The bge(4) http://www.freebsd.org/cgi/man.cgi?query=bge&sektion=4&manpath=FreeBSD+8.0-RELEASE lists the BCM570x, but doesn't list the HP7782, which is leading me to think that there may be a 'generic' FreeBSD/HP7782 problem here, which I will try an eliminate next week by doing a clean FreeBSD install and seeing if I get any packet loss.

        I will also see if I can find another 10/100/1000 NIC I can put into the DL385 to test that it isn't something else in the DL385 that is causing the problem, like running 4 way SMP or the PCI-x bridge or…

        Cheers

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        • T
          thermionic
          last edited by

          Hi,

          I installed FreeBSD 8.0, installed iperf and ran it against another server, was able to saturate the link, and had no dropped packets while pinging it on the bge0 interface.

          I'm having trouble understanding how to setup VLANs in rc.conf, but managed it manually on the bge0 interface, and also ran iperf with no dropped packets across VLAN tagged interfaces.

          
          ifconfig bge0.205 create
          ifconfig bge0.205 inet 10.205.1.253 netmask 255.255.255.0
          
          

          I'm now at a loss on what I can try next…

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          • E
            eri--
            last edited by

            disable rxcsum/txcsum which only lately have been fixed in bge(4) driver on FreeBSD.

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            • T
              thermionic
              last edited by

              @ermal:

              disable rxcsum/txcsum which only lately have been fixed in bge(4) driver on FreeBSD.

              do you mean putting a tick in the box for "Hardware Checksum Offloading" ?

              Cheers

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              • T
                thermionic
                last edited by

                I'm hoping that do you didn't mean putting a tick in the box for "Hardware Checksum Offloading", as the Dashboard Gateways display is still showing loss (currently 2%) on both WAN and LAN interfaces.

                I'm wondering if its something in gateway monitoring that for some reason is having trouble ?

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                • T
                  thermionic
                  last edited by

                  I take it back, it looks as if putting a tick in the box, has made a difference.

                  Cheers

                  Arne

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                  • T
                    thermionic
                    last edited by

                    I spoke too soon, it has started reporting high packet loss again :-(

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                    • D
                      dusan
                      last edited by

                      I had the same problem. I turned off the traffic shaper and the problem's gone.

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                      • T
                        thermionic
                        last edited by

                        I'm not using the packet shaper :-(

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                        • T
                          thermionic
                          last edited by

                          I've just seen that the AMD64 build are back again :-)

                          I'll try and give the latest snapshot a go tomorrow.

                          Cheers

                          Arne

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                          • T
                            thermionic
                            last edited by

                            tried the latest AMD64 livecd, and although it boots, it gets as far as

                            IPsec: Initialized Security Association Processing.

                            but no further :-(

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