[c-nsp] PPPoE multiple sessions issue

[D.J. O'Berry]

The issue started up out of the blue. This network has run fine for 
several months with no issues. Its only in the last few months that the 
issue started occuring.  We dont use Occam dslams but I'll keep that in 
mind. We were using default keepalive settings of 300 seconds but have 
shortened that to 180 for testing. We'd like to stay away from 30 second 
keepalives if possible, but if we can't get the 180 to work we may try 
that.

Thanks for the suggestion.

Paul Stewart wrote:
> Did this start "out of the blue" or is this a new installation?  We had
> something like this occurring for a while but only on our own DSLAM's.  It
> ended up being a timing issue from the DSLAM manufacturer which I confirmed
> from others using the same gear (Occam).  To work around this issue, we
> adjusted our keepalives in the virtual-template:
>
> interface Virtual-Template1
>  keepalive 30 10
>
>
> This worked for us .. Occam I'm told is unable to reproduce this issue in
> their labs but since this resolved it for us we never pushed the matter...
>
> Cheers,
> Paul
>
> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net
> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of D.J. O'Berry
> Sent: October 23, 2009 12:28 PM
> To: 'Cisco-nsp'
> Subject: [c-nsp] PPPoE multiple sessions issue
>
> Hello all,
>
> I have an issue where random users will apparently lose their pppoe 
> connection on their end for some reason, and reconnect again. The 
> reconnect goes well, but the user cannot browse.  Doing a show user | 
> inc username will list 2 pppoe sessions for the user. Obviously one of 
> these is the lost session. We have a keepalive set, so after the 
> keepalive time passes, the old session of course disappears. The problem 
> is, until that happens or we remove the old session, the user cannot 
> browse at all. Any ideas on causes of this would be much appreciated.
>
> Thanks in advance.
>
>   

-- 
D.J. O'Berry
Network Design Engineer
ZCorum
866-467-9791 ext 7041
doberry at zcorum.com