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    Possible hardware issue with Charters new DOCSIS 3 modems

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    • R Offline
      roccor
      last edited by

      Ok so I've been running my PFsense 2.1 amd64 on a SFF Dell Optiplex 320, with an Intel dual 1gb nic with a BCM5709 chipset successfully for a long damn time now.  I called into Charter for a billing matter and ended up getting a free upgrade to 30mb.  Anyway I received a new Arris TM822 in the mail.. following their limited instructions I swapped the modems out and bounced everything and the nic port bce1 that uplinks to the modem started flapping.

      Trying a separate windows and ubuntu machines, plugged directly into the Arris both worked like a champ.  In a long call with tech support, the tier 1 guy had no real ideas except for going to the nearest location and getting a different mfg modem.  So this AM I did that, was swapped to a Cisco TCM.. something.  Anyway after provisioning the same thing began happening.

      Nothing I have done so far has impacted this.. Since Ubuntu works, Windows works the only thing I can point a finger to is FreeBSD.  The idea I have no is to swap out the nice GB nics with a pair of older 100mb (3C905B and a Linksys LNE100tx)  Unless you gurus have any ideas?

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      • J Offline
        jasonlitka
        last edited by

        If you are connecting directly to the ethernet port on your modem then try forcing speed and duplex on both ends.  It might be an auto-negotiate failure.

        I can break anything.

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        • stephenw10S Offline
          stephenw10 Netgate Administrator
          last edited by

          If you're running a PPPoE connection directly to the pfSense box leaving the parent unassigned or assigned as type 'none' you may have fallen foul of this:
          https://forum.pfsense.org/index.php?topic=66908.msg386279#msg386279
          A bug in which interfaces with no IP address are cycled as though they should have one. It's fixed in 2.1.1 snapshots so perhaps try that.

          Steve

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          • R Offline
            roccor
            last edited by

            This is a cable connection, so no PPPoE luckily.

            Honestly I believe swapping out the nics is what resolve the whole WAN interface flapping bit.  I did hard-set 100mb/Full Duplex on both nics just in case though.  Also, and I cannot figure out why this changed, but under Routing the GW_WAN did not have Default gateway checked.

            However now I'm having a throughput issue.  I'll start another thread about it.

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