Hi all,
I would like to share the way I am implementing QoS in a 6509 switch to deal
with video multicast presentation.
It will be great to receive your thoughts and experience, concerning
Multicast application used and QoS solution.
The multicast application is Window Media Server and the client is the
Window Media Client. As far as I know, this server do not differentiate the
video and voice signal; it uses http and encapsulates the data in UDP packets.
The packes are classified, marked, scheduled in the TX queue for local
segments or goes to the LLQ in the MSFC for remote users
The configuration in the switch are
sh qos acl info config all
set qos acl ip video_200
----------------------------------------------
1. dscp 44 microflow video_limit_200 ip host 10.x.x.x host 239.y.y.y
sh qos policer config microflow
QoS microflow policers:
Microflow name Avg. rate (kbps) Burst size (kb) Exceed
action
------------------------------- ---------------- ---------------
-------------
video_limit_200 200 400 drop
ACL attached
------------------------------------
video_200
sh qos acl map config all
ACL name Type Ports
-------------------------------- ---- ---------------------------------
video_200 IP 5/6-7
The MSFC LLQ configuration is:
sh policy-map inte atm 6/0/0.113
ATM6/0/0.113
service-policy output: bsa
queue stats for all priority classes:
queue size 0, queue limit 7
packets output 47386868, packet drops 0
tail/random drops 0, no buffer drops 0, other drops 0
class-map: Multimidia (match-all)
47386866 packets, 45287045621 bytes
5 minute offered rate 152000 bps, drop rate 0 bps
match: ip precedence 5
Priority: kbps 200, burst bytes 5000, b/w exceed drops: 0
class-map: class-default (match-any)
296226397 packets, 299692153426 bytes
5 minute offered rate 1132000 bps, drop rate 0 bps
match: any
296226393 packets, 299692148890 bytes
5 minute rate 1132000 bps
queue size 0, queue limit 5838
packets output 296226390, packet drops 0
tail/random drops 0, no buffer drops 0, other drops 0
random-detect:
Exp-weight-constant: 9 (1/512)
Mean queue depth: 0
Class Random Tail Minimum Maximum Mark Output
drop drop threshold threshold probability packets
0 0 0 1459 2919 1/10 242809944
1 0 0 1641 2919 1/10 16023
2 0 0 1823 2919 1/10 4316
3 0 0 2006 2919 1/10 90
4 0 0 2188 2919 1/10 6088
5 0 0 2370 2919 1/10 0
6 0 0 2553 2919 1/10 2783
7 0 0 2735 2919 1/10 63
fair-queue: per-flow queue limit 1459
Thanks
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