[c-nsp] PPP Multilink Question.

[Rodney Dunn]

The reason you see drops is you have installed
a punt for the FIB entry and those are rate limited
to process level.

CEF for Multilink support has been in place for
a good time now.  Try the latest 12.2 mainline
code as a good place to start.

You shouldn't punt to CEF because of multilink
but you could punt for other reasons.  The most
common one I see is because of some form of compression
being negotiated.


Rodney


On Mon, Aug 02, 2004 at 02:24:23PM -0400, James Galliford wrote:
> Hello all,
> 
> I recently was given the assignment of looking into PPP multilink to
> bundle 4 T-1 circuits together that go from point A to point B.  The
> multilink worked beautifully except for one factor.  Any packets
> crossing the bundle would be process switched.  I also found that I
> could enable CEF on the bundle, but as a side effect any traffic that
> passed over the bundle would drop every other packet.
> 
> We've seen this issue before on cable routers running telco-return where
> enabling CEF would also cause a situation where every other packet was
> dropped to a telco-return device but that was fixed sometime ago.
> 
> Does anyone know of an IOS version that can do multilink non-process
> switched but does not have the same strange bug that we are seeing with
> enabling CEF?
> 
> Thanks.
> 
> -----------------------
> James Galliford
> PenTeleData Engineering
> 
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