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    Network problems with vlan

    Scheduled Pinned Locked Moved General pfSense Questions
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    • X Offline
      X-log
      last edited by

      Setup:
      pfsense 2.1 x64 running in vbox on W7 host
      two virtio-net adapters, one bridged to marvell 1g nic (all windows stuff disabled, also tried with intel nic), other - to loopback adapter.
      local lan is vlan33

      Problem:
      if I connect pfsense to access port (no vlan management in pfsense), everything if fine (can access web config, etc).
      if pfsense is connected to trunk port (pfsense: LAN (lan) -> vtnet0_vlan33 -> v4: 192.168.4.105/24) pinging, ssh is fine, but web config page keeps loading forever (can't even get to login dialog).

      What could be the cause of such behaviour?

      attached is a capture  of network data then pfsense main page is loading (K12 textfile).

      pfsense_vlan.txt

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      • W Offline
        wallabybob
        last edited by

        Perhaps you have a MTU issue. VLAN tags take a couple of bytes in the frame.

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        • X Offline
          X-log
          last edited by

          Moved to vmware and lan problems are gone, but now the same thing is happening for wan (basically there are a lot of retransmitions/dup acks in tcp connections), lowering mtu/mss does not help.

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