[c-nsp] PPPOE intermittently fails to respond to PPP keepalives on 7204xvr with 12.4(24)T5

[Robert Blayzor]

On Aug 21, 2013, at 1:49 PM, Richard Haakma <richard at kci.net.nz> wrote:
> The problem is that intermittently IOS on the 7204VXR will not respond
> to PPP keepalive packets. Some CPEs send keepalives and when they don't
> get a reply they disconnect the PPP session and reconnect. Some
> customers notice the short outage and it can be repeated several times
> over a few minutes. This has been verified by observing packets at the
> CPE.


I don't believe this is right.  The BRAS should be sending the keepalives and the client should be answering.  At least your virtual-template should have a default keepalive of 10 seconds. 

You can try increasing this keepalive to 20-30 seconds and see if things improve; but unlikely.  The big problem with increasing the keepalive value is the time it takes the router to detect dead PPP sessions and frees the session and any IP pool address associated with it.

-- 
Robert Blayzor
INOC, LLC
rblayzor at inoc.net
http://www.inoc.net/~rblayzor/