CBWFQ on ATM VCs

[phil.black]

I have implmented CBWFQ on a 3640 with an 8 port ima interface (4 of which are in service).The IOS is 12.2(1). I created:

Class-Map match-all citrix

match input-interface FastEthernet0/0

match protocol citrix

Policy-map citrix

class citrix

bandwidth percent 50

queue-limit 50

class class-default

fair-queue

I appled the service policy to one of my ATM VCs. When I sho policy-map int atm1/ima0.100 I see:

ATM1/IMA0.100: VC 1/100 -

Service-policy output: citrix

Class-map: citrix (match-all)

0 packets, 0 bytes

5 minute offered rate 0 bps, drop rate 0 bps

Match: input-interface FastEthernet0/0

Match: protocol citrix

Match: protocol telnet

Weighted Fair Queueing

Output Queue: Conversation 73

Bandwidth 50 (%) Max Threshold 50 (packets)

(pkts matched/bytes matched) 0/0

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

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

290193 packets, 74476663 bytes

5 minute offered rate 170000 bps, drop rate 0 bps

Match: any

Weighted Fair Queueing

Flow Based Fair Queueing

Maximum Number of Hashed Queues 64

(total queued/total drops/no-buffer drops) 0/0/0

Why dont I see any packets matching the citrix class-map when the majority of the traffic traversing the circuit IS citrix traffic?

Thanks!

[nwcservice]

I haven't done this for citrix just voice/video. Also haven't defined my criteria with the command match protocol citrix. However this would be an example of how I'd do it.

class-map match-all citrix

match access-group 103

policy-map qos-policy

class citrix

bandwidth 50

access-list 103 permit tcp any eq 1494 any

access-list 103 permit udp any eq 1604 any

interface ATM1/IMA0.9

ip address x.x.x.x x.x.x.x

pvc 0/40

service-policy output qos-policy

[vincent-n]

I've done some CBWFQ at the ATM PVC level as you've mentioned but some how my configuration does not go into the router. That is the router does not complain when I input the configuration but when I do show run, the command does not show up. Eg.

interface ATM1/0.34 point-to-point

description *** ATM PVC to Brisbane - 512k CIR /1024 (MFRAD11677006) ***

mtu 1500

bandwidth 512

ip address 192.168.155.17 255.255.255.252

ip summary-address eigrp 112 0.0.0.0 0.0.0.0 5

pvc 3/34

vbr-nrt 1024 512 32

service-policy output QOS-Policy

I have a Cisco 3662 router running IOS version 12.2(2)T. What's your version? Can you email me to vincentn@mediamonitors.com.au with your answer. Thanks in advance.

[raarons]

This bit of the output may be a clue...

Class-map: citrix (match-all)

...

Match: input-interface FastEthernet0/0

Match: protocol citrix

Match: protocol telnet

It looks like the class map is matching only traffic which is both Citrix AND telnet. This may be a relic from a previous configuration. Try deleting the class and re-creating it, or configuring

Class-Map match-all citrix

no match protocol telnet

Hope this helps.