Comments on Cisco IOS hints and tricks: Solution: Bandwidth+Police actions in CB-WFQ

Hi Ivan, I have tryed similar situation, with tw...

2010-01-14T16:26:49.000+01:00

Hi Ivan,

I have tryed similar situation, with two paralel TTCP sessions on different ports to one host. It wasn't work for me !

I used Cisco 1811 with IOS 15.0M

config is:

int fa 1
bandwith 8000

policy-map QoS-policy
class c5251
bandwidth percent 75

#sh policy-map int fa 1

Class-map: c5251 (match-all)
687796 packets, 846416624 bytes
30 second offered rate 3581000 bps, drop rate 0 bps
Match: access-group 121
Queueing
queue limit 64 packets
(queue depth/total drops/no-buffer drops) 0/0/0
(pkts output/bytes output) 91515/112700526
bandwidth 75% (6000 kbps)

Class-map: class-default (match-any)
1503050 packets, 1217110950 bytes
30 second offered rate 4901000 bps, drop rate 0 bps
Match: any

queue limit 64 packets
(queue depth/total drops/no-buffer drops) 0/0/0
(pkts output/bytes output) 134072/136457440

Do you have an idea why is Qos not working ???

Hi peter, That was an excellent explanation. But ...

2009-12-19T22:33:55.000+01:00

Hi peter,

That was an excellent explanation. But I'm not able to download QoS.teaser.pdf.
Thanks.

Ragesh

Hi Ivan, thanks for referring to my blog post! A...

2009-11-10T13:54:14.822+01:00

Hi Ivan,

thanks for referring to my blog post! As some "extra" reading I may refer folks to the following document:

http://www.internetworkexpert.com/downloads/IEWB-RS-VOL-I-V5.Section.10.QoS.teaser.pdf

It breaks down a few QoS topics in "scenario/solution" manner and covers Hold-Queue, WFQ and IP RTP Reserve features (I spent a lot of time on simulations for those). I found that many people have poor understanding of WFQ and knowing this technology is essential to understanding CBWFQ.

Thanks,

Petr