[c-nsp] QoS on Cisco 2600

[Jeff Wojciechowski]

All-

I am pretty new at using NBAR - does the config below ensure that traffic in each direction (TCP 1494 from client to server *AND* the random TCP port between server to client) gets prioritized?

I have the same class map "match protocol citrix" configured on each of my WAN routers (all running 12.4-22.T3).

So I guess the question boils down to "what does NBAR specifically use to classify traffic such as Citrix"?

Naturally the goal is to ensure that *ALL* Citrix traffic is given priority since we don't do any mapped drives/printing directly to our thin clients.

Thanks,

-Jeff


-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Jeff Wojciechowski
Sent: Thursday, July 01, 2010 10:22 AM
To: Stephane MAGAND; cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] QoS on Cisco 2600

Hi Stephanie,

Here's what we have configured:

class-map match-all citrix-all
 match protocol citrix


policy-map PPS
 class citrix-all
  set ip dscp cs3
    bandwidth 800
 class class-default
    fair-queue
  set ip dscp af21


ip nbar protocol-discovery on all interfaces

service policy output PPS on my WAN interface

(in this case we are giving Citrix 800kbps and using Fair Queuing on remainder of traffic) Not sure if this will work on a 2600.....this is running on a 3825. I think the issue will be whether or not your 2600 will do NBAR.

Then do:

Show policy map interface *wan interface* to verify packets are going thru queue - in my case:

    Class-map: citrix-all (match-all)
      55310079 packets, 4798639048 bytes
      5 minute offered rate 340000 bps, drop rate 0 bps
      Match: protocol citrix
      Queueing
      queue limit 64 packets
      (queue depth/total drops/no-buffer drops) 0/52/0
      (pkts output/bytes output) 55310028/4798625680
      QoS Set
        dscp cs3
          Packets marked 55310080
      bandwidth 800 kbps

Thanks,

-Jeff


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