[c-nsp] QoS on Catalyst 3550

Michael Crilly michael.crilly at comtek.co.uk
Wed Feb 2 12:14:11 EST 2011


Greetings,

I am attempting to configure QoS on a series of 3550s, a 3560 and our 
core switch, a 4500. Currently, I am testing QoS configurations on the 
3550, but with limited success.

Using auto qos would be nice, but we can't count on the handset marking 
its traffic as DSCP 46 (or CoS 5) as we're using a mash-up of Cisco IP 
phones, Nortel phones, etc. Therefore, we want to match traffic on our 
VoIP IP network, which is currently configured to run on 10.200.0.0/16.

The issue I am having is nothing is being matched when I look at the 
output of 'show policy-map interface fa0/3' (fa0/3, for example), but I 
can see packets being classified as DSCP 46 when I look at the 'mls qos 
interface fa0/3 stats' command.

I have attached my switch's configuration (with passwords censored). 
Could someone take a quick peak and let me know if they can see anything 
that is missing? It could be something obvious that my now stale eyes 
are missing, so a fresh pair might help.

Thanks in advance for all assistance/responses.

Kind regards,

-- 

Michael Crilly
ICT Systems Administrator
Comtek Network Systems

E: michael.crilly at comtek.co.uk



More information about the cisco-nsp mailing list