[cisco-voip] QoS debugging

[Norton, Mike]

I test by overloading the link with traffic (UDP iperf works good) and then sending largish pings with different DSCP tags through the link. If the queuing is working properly it will be reflected in the latency.

-- 
Mike Norton
I.T. Support
Peace Wapiti School Division No. 76
Helpdesk: 780-831-3080
Direct: 780-831-3076


-----Original Message-----
From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Joseph Mays
Sent: September-09-11 11:22 AM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] QoS debugging

Okay, on a cisco 7206VXR running c7200-is-mz.123-16.bin, I have set up the following....

class-map match-all dscp-ef
  match ip dscp ef
class-map match-all dscp-af31
  match ip dscp af31
class-map match-all dscp-af23
  match ip dscp af23

policy-map queue-on-dscp
 description Prioritizes voice traffic first, signalling next.
  class dscp-ef
   priority 184
  class dscp-af31
   priority 184
  class class-default
   fair-queue

interface FastEthernet0/0
 description Local LAN
 ip address XXXX 255.255.255.192
 no ip proxy-arp
 ip ospf message-digest-key 1 md5 7 XXXX  ip ospf priority 200  no ip mroute-cache  duplex full  no keepalive  service-policy output queue-on-dscp

So how do I watch what the box is doing to determine if it's actually doing the prioritization and how much is being done? Is it just "debug priority" 
or are there better tools I could be using?

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