Hi qos guru's.
I'm having some unexpected behaviour, for what I know about qos. I would like to give citrix traffic a better responce.
In normal working conditions, the round-trip-time on a 2mb sdsl link is under 30ms.
But when someone downloads big files, the rtt rise up to 250ms. Citrix users don't like this.
So I've implemented QOS, but I don't see any improvement.
class-map match-all citrixCGP
match access-group 100
priority percent 75
service-policy output dialer0
access-list 100 permit tcp any eq 2598 any
access-list 100 permit icmp any any
Citrix uses tcp port 2598.
This is implemented at the source, where also the citrix server stands.
I've also put icmp in the access-list, so I can measure the rtt when it get optimized.
Unfortunatly as I wrote, still with copying big files out of citrix, for example a big ftp file, the rtt rises up to 250.
Service-policy output: dialer0
Class-map: citrixCGP (match-all)
100 packets, 6936 bytes
5 minute offered rate 0 bps, drop rate 0 bps
Match: access-group 100
Output Queue: Conversation 264
Bandwidth 1500 (kbps) Burst 37500 (Bytes)
(pkts matched/bytes matched) 0/0
(total drops/bytes drops) 0/0
Class-map: class-default (match-any)
3192 packets, 3530714 bytes
5 minute offered rate 94000 bps, drop rate 0 bps
Flow Based Fair Queueing
Maximum Number of Hashed Queues 256
(total queued/total drops/no-buffer drops) 0/0/0
This output shows that the traffix is separated in optimized and default traffic.
But it's not working for me.
What is going wrong? I hope someone can help me.