QoS setup

[huwyhuwy123]

Hi,

I've configured QoS on 2 routers to set a reservation for voice on citrix traffic (see attached). However when I look in the 'monitoring' section of the SDM it doesn't look like any traffic is being matched. Given that citrix and voice are used heavily I can only assumed I've made a mistake!

Could anyone please suggest where I may have gone wrong? (Both routers show no QoS matched traffic.)

Thanks in advance,

H

[lejoe.thomas]

Hi Algy,

I am assuming traffic is entering through e0 and exiting through fa0, in which case it should be applied as

int e0

service-policy input QoS

or

int f0

service-policy output QoS

HTH

Lejoe

[huwyhuwy123]

Hi Lejoe,

Thanks a lot for your assistance.

e0 is the WAN interface, fa0 is the LAN.

Can you clarify where the service-policy command should be? (i.e. have I got it right!)

-Al

[lejoe.thomas]

Hi Algy,

Everything is correct then. Please post the same results requested by Joseph.

sh ip access-list

sh ip policy-map interface e0 output

HTH

Lejoe

[Joseph W. Doherty]

I didn't see anything obviously incorrect with your QoS statements.

Your Citrix traffic is using default Citrix ports and you're sure you voice traffic will match against the ACL you've defined?

Could you post "show policy-map interface output" and "show access-list" to see stats for both the policy map and ACL? (Since you also have NBAR protocol discovery running, you might posts its stats too.)

[huwyhuwy123]

Thanks joe,

I have attached the "show" info - what do you think?

I'd attach the nbar info if I knew how to do it ;-)

-Al

[Joseph W. Doherty]

The show policy map stats indicates your two LLQ classes have matched traffic. The stats also indicate there have been drops in both LLQ classes. (The loss rate for Citrix is likely acceptable, but you might want to slightly increase the bandwidth allocation for Voice [try 25%?].)

When you took the stats snapshot, there doesn't appear to be any active Citrix or Voice traffic. Perhaps same was true when you were looking with SDM.

You migth try the stats again when you believe either Citrix or Voice is active. Also, you might reduce the load-interval to 30 seconds and clear stats for a fresh slate.

[lejoe.thomas]

Hi Algy,

From the output it looks seems like QOS is working as indicated by

Class-map: Voice (match-any)

420907 packets, 73614757 bytes

Class-map: Citrix (match-any)

138737250 packets, 20345179746 bytes

i.e the number of packets which match the criteria

HTH

Lejoe

[huwyhuwy123]

Cheers guys. Your help is much appreciated :)

I have cleared the counters on the 2 routers. And run the show command again (see below)...

I notice that after 1/2 hour or so it's barely matched any traffic.

I was wondering if you know a way of looking at the traffic passing the cisco to see what ports it's using etc?

-Al

------------------------------

lm-max#sh policy-map int output

Ethernet0

Service-policy output: QoS

Class-map: Voice (match-any)

75 packets, 7664 bytes

5 minute offered rate 0 bps, drop rate 0 bps

Match: access-group name Voice

75 packets, 7664 bytes

5 minute rate 0 bps

Queueing

Strict Priority

Output Queue: Conversation 264

Bandwidth 30 (%)

Bandwidth 3000 (kbps) Burst 75000 (Bytes)

(pkts matched/bytes matched) 0/0

(total drops/bytes drops) 0/0

Class-map: Citrix (match-any)

1 packets, 154 bytes

5 minute offered rate 0 bps, drop rate 0 bps

Match: protocol citrix

1 packets, 154 bytes

5 minute rate 0 bps

Queueing

Strict Priority

Output Queue: Conversation 264

Bandwidth 20 (%)

Bandwidth 2000 (kbps) Burst 50000 (Bytes)

(pkts matched/bytes matched) 0/0

(total drops/bytes drops) 0/0

QoS Set

dscp ef

Packets marked 1

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

262914 packets, 71295706 bytes

5 minute offered rate 510000 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

[Joseph W. Doherty]

"I was wondering if you know a way of looking at the traffic passing the cisco to see what ports it's using etc? "

Believe there is. I recall it's a debug command of NBAR when running NBAR discovery.