[nsp] NPE-G1 LNS / VRF dropped packets problem

[Steve Colam]

On Fri, 21 May 2004, Steve Colam wrote:

Thanks to all that have responded...  (especially those
doing exactly the same!)

We have removed the vrf config and are now dropping these
sessions natively... which appears to have fixed the problem.

TAC and our SE are still investigating...


> Hi All,
>
> Is anybody running 7200 NPEG1s for ADSL LNS boxes, specifically
> where you are terminating PPP sessions into a VRF ? IE the
> vpdn group uses a virtual-template that is set to drop
> sessions into a named VRF ?
>
> We have some problems with a tiny handful of users sessions
> where traffic between ADSL CPE (that never leaves the LNS
> to the next hop) are dropping packets, also traffic between
> the CPE and LNS are dropping packets. Whereas traffic from
> a next hop router (further upstream from the LNS) to CPE
> is never dropped ?
>
> This behaviour appears to be intermittant, and it smells of
> CEF forwarding problems relating to the use of VRFs.... It
> does not appear to be congestion within the ATM/l2tp cloud.
>
> I've got a TAC case open (no response as yet).
>
> We're running 12.2(15)T12 (enterprise release)
>
> Thanks,
>
> Steve
>
> Steve Colam
> PIPEX Communications
> mob: +44 7971 534 844
> skype: callto://sjcolam
> www.pipexcommunications.net
>
>
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