PPPoE Session Drops with VLAN

  • Hi Everyone, I hope this is the right place to post this.

    I have a pfsense 2.1.5 box with 3 PPPoE ADSL links - WAN1, WAN2, WAN3

    WAN1 has a dedicated NIC connected from PfSense to Modem
    I am sharing a NIC for WAN2 and WAN3 and have 2 VLANs 502 and 503.

    I have authentication and can pass data so everything works, except, the sessions drop regularly, as often as every 10mins. It is random though.
    The only message I have been able to find in the PPP log is

    ppp: [opt1] IPCP: LayerDown
            ppp: [opt1] IFACE: Down event

    Is there something special that needs to be done when running PPPoE across a VLAN?

    The problem does not happen on WAN1 which is not part of a VLAN. Swapping the interface used for WAN1 to WAN2/3 also does not fix the issue.

    I have no periodic reset or dial on demand set, all other PPPoE settings are in their default state.

    Can anyone advise what might be causing an issue like this?


  • Some further info I have found on closer examination of /var/log/ppp.log

    [opt1] Bundle: No NCPs left. Closing links…
    [opt1] IPCP: state change Closing –> Initial
    [opt1_link0] LCP: SendTerminateAck #52
    [opt1_link0] LCP: LayerDown
    [opt1_link0] PPPoE: connection closed
    [opt1_link0] Link: DOWN event
    [opt1_link0] LCP: Down event
    [opt1_link0] LCP: state change Stopping –> Starting
    [opt1_link0] Link: reconnection attempt 1 in 3 seconds

    It also turns out it is less random than I had thought. It is every 4.5mins.

    I was thinking it might be this https://redmine.pfsense.org/issues/3821  but that issue is apparently resolved in 2.1.5 which I am running.

    Any ideas here?

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