[c-nsp] Qos Cisco 831

[Ziv Leyes]

I'm not sure regarding the Cisco 831 capabilities, but according to your configuration it seems your problem is not marking but matching the packets.
If you see the counters you will notice that none is catched, not by the acl and not by the dscp ef, so the question is, what is the origin of the voice packets? Is it some voip device at your lan or you're trying to prioritize the packets that are coming from the internet?
If the answer is the latter then you may have a problem with your SP removing the dscp values of the packets, there are still some problems globally talking about conserving the voip priority marking all along the path.
Hope this helps
Ziv


-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Rocker Feller
Sent: Friday, June 04, 2010 3:44 PM
To: cisco_nsp
Subject: [c-nsp] Qos Cisco 831

Hi,

Am working on prioritising voip traffic on a cisco 831.

The 831 is using ios Version 12.3(14)T1

Issue is that I cannot mark packets so as to prioritise.

Is this possible on this router?

Any assistance appreciated in advance.

Config Example--------

class-map match-any set_dscp
 match access-group 151
 match ip dscp ef

policy-map Qos2_VoIP
 class set_dscp
  priority 64
 class class-default
  fair-queue

Policy_Map applied stats shows no hits on the VoIP
sh policy-map interface e1
 Ethernet1

  Service-policy output: Qos2_VoIP

    Class-map: set_dscp (match-any)
      0 packets, 0 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: access-group 151
        0 packets, 0 bytes
        5 minute rate 0 bps
      Match: ip dscp ef (46)
        0 packets, 0 bytes
        5 minute rate 0 bps
      Queueing
        Strict Priority
        Output Queue: Conversation 264
        Bandwidth 64 (kbps) Burst 1600 (Bytes)
        (pkts matched/bytes matched) 0/0
        (total drops/bytes drops) 0/0

    Class-map: class-default (match-any)
      249 packets, 55261 bytes
      5 minute offered rate 4000 bps, drop rate 0 bps
      Match: any
      Queueing
        Flow Based Fair Queueing
        Maximum Number of Hashed Queues 256
        (total queued/total drops/no-buffer drops) 0/0/0
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