[c-nsp] QoS Strategy for Cisco 877

[Gary T. Giesen]

I was hoping to use priority queueing, since it does exactly what I
want (service all packets in highest queue, then default queue, then
low queue) but it doesn't seem to work with a DSL/ATM interface...

GG

On Fri, May 1, 2009 at 7:20 AM, Steve McCrory
<SteveMc at netservicesplc.com> wrote:
> Hi Gary,
>
> Configuring QoS on Cisco 877 routers is actually at the heart of one of
> our products.
>
> Can I ask what queuing method you are using, are you using CBWFQ or
> Priority queuing?
>
> Steven
>
> Steven McCrory
>
> Senior Network Engineer
>
> Netservices PLC
> Waters Edge Business Park
> Modwen Road
> Manchester, M5 3EZ
>
> www.netservicesplc.com
>
> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net
> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Gary T. Giesen
> Sent: 30 April 2009 21:17
> To: cisco-nsp at puck.nether.net
> Subject: [c-nsp] QoS Strategy for Cisco 877
>
> Guys,
>
> I've been trying a bunch of different methods, but nothing seems to
> achieve what I want. Ideally I'd like to use Priority Queueing (or
> something that operates the same) on the ATM0 interface of a Cisco
> 877.
>
> I have 3 classes of traffic:
>
> Telnet/SSH/ICMP/Management - High Priority
> General Data - Default Priority
> IP Video Camers - Low Priority
>
> Normally I would just use a priority-list/priority-group, but I can't
> seem to apply it to either the ATM0 interface or the ATM0.33 interface
> (and I have also tried applying it on the PVC under the subinterface).
>
> I would like all packets in the high priority queue to be serviced
> first, then all packets in the default priority, and if there's any
> bandwidth leftover, service the low priority queue. I would prefer not
> to have to define minimum and maximum bandwidth for each queue (I
> don't want any hard queues/bandwidth limits, I would like all
> available bandwidth to be used by any particular queue as long as the
> queues above it are serviced).
>
> Can anyone recommend a QoS strategy/configuration for this that will
> work on the ATM0/DSL interface (no PPPoE) on a Cisco 877?
>
> Thanks,
>
> GG
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