[cisco-nas] CBWFQ via radius for l2tp?

Dennis Peng dpeng at cisco.com
Wed May 25 13:39:11 EDT 2005


Jon Lewis [jlewis at lewis.org] wrote:
> On Wed, 25 May 2005, Dennis Peng wrote:
> 
> > We currently do not support queueing on any type of VPDN vaccess
> > interface (though this will change in the somewhat near future). You
> > can do rate-limiting or policing.
> 
> That kind of sucks for now.  So you're suggesting I can use CAR or
> policing in a service policy to prevent !voip traffic from using more than
> C-V bandwidth, where C is the circuit's capacity, and V is what we need
> reserved for voip packets?

Yeah, I think that is the only way. The other concern with doing QoS
on the LNS is that usually at least one segment of the path to the
client is oversubscribed (usually the uplink on the DSLAM), so you
can't really do end-to-end QoS.
 
> Any idea how far off (somewhere in 12.3, 12.4, 13.x) CBWFQ over VPDN is?

It'll come out in 12.2SB, the broadband release off of 12.2S and I
believe we will only support the 7x00, 1000x platforms in that
release. Scalability will also decrease due to the increased memory
requirements for doing shaping/queueing on those interfaces.

Dennis
 
> ----------------------------------------------------------------------
>  Jon Lewis                   |  I route
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