[c-nsp] QOS Problem - T1 Interface

[Paul Stewart]

Sorry to bump my own post but we took out NBAR and starting marking based on
source IP block and problem solved.  For some reason (seen this before and
it just struck me) NBAR doesn't always identify traffic properly...

New config that is working *great*...;)

class-map match-any KGCC-QOS
  match access-group 66
policy-map KGCC2
  class KGCC-QOS
    priority 1000 1500


Paul




-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Paul Stewart
Sent: September-17-09 1:36 PM
To: cisco-nsp at puck.nether.net
Subject: [c-nsp] QOS Problem - T1 Interface

Hi folks...

 

I need a second set of eyes here...;)  We have a customer fed off T1 to an
Adtran router that is having problems with their voice quality... they also
share this as their Internet connection.

 

A ticket is open with Adtran to confirm their QOS settings but I'm hoping to
clarify if below is correct? ;)  

 

At the moment I'm capturing this, they have no active voice calls....

 

interface Serial6/0/3:0

 description xxxxxxxxxxxxxxxxxxxxxxxxxx

 ip address xx.xx.xx.xx 255.255.255.248

 ip nbar protocol-discovery

 encapsulation ppp

 no fair-queue

 service-policy output KGCC

 

 

class-map match-all VOIP-Control

  match protocol mgcp

class-map match-all VOIP-Voice

  match protocol rtp

 

policy-map KGCC

  class VOIP-Control

    bandwidth 200

  class VOIP-Voice

    priority 700

  class class-default

    fair-queue

 

 

dis1-rtr-pt#sh policy-map interface Serial 6/0/3:0

 Serial6/0/3:0

 

  Service-policy output: KGCC

 

    queue stats for all priority classes:

 

      queue limit 175 (packets)

      (queue depth/total drops/no-buffer drops) 0/0/0

      (pkts queued/bytes queued) 7427340/1512404672

 

    Class-map: VOIP-Control (match-all)

      42117 packets, 19965187 bytes

      5 minute offered rate 0 bps, drop rate 0 bps

      Match: protocol mgcp

      Queueing

      queue limit 50 (packets)

      (queue depth/total drops/no-buffer drops) 0/0/0

      (pkts queued/bytes queued) 42117/19965187

      bandwidth 200 kbps

 

    Class-map: VOIP-Voice (match-all)

      7427340 packets, 1512404672 bytes

      5 minute offered rate 0 bps, drop rate 0 bps

      Match: protocol rtp

      Priority:  700 kbps, burst 17500 (bytes)

 

    Class-map: class-default (match-any)

      27560986 packets, 19263245303 bytes

      5 minute offered rate 520000 bps, drop rate 0 bps

      Match: any

      Queueing

      queue limit 159 (packets)

      (queue depth/total drops/no-buffer drops/flowdrops) 0/47180/0/47180

      (pkts queued/bytes queued) 27637553/19244765795

      Fair-queue: per-flow queue limit 39

 

 

Thanks,

 

Paul

 

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