wrr-queue - where to find information?

[voiper_99]

Hi, I am looking for detailed information on what this command does and how to use it. I have found bits and pieces here and there with google searches but nothing substantial. Does anyone know where I can get detailed information on it?

The commands I am specifically interested in are wrr-queue bandwidth and wrr-queue cos-map.

Thanks in advance.

[Amit Singh]

This post of mine, should help you understanding the same configs.

http://forum.cisco.com/eforum/servlet/NetProf?page=netprof&forum=Network%20Infrastructure&topic=LAN%2C%20Switching%20and%20Routing&CommCmd=MB%3Fcmd%3Ddisplay_location%26location%3D.1dde1cdc

If you have any questions, Please revert.

HTH,Please rate if it does.

-amit singh

[voiper_99]

Thank you both for your help.

asingh, in regards to your post in the other conversation, that person had the following setup:

interface FastEthernet4/41

switchport

switchport access vlan 50

switchport mode access

switchport voice vlan 250

no ip address

wrr-queue cos-map 1 1 1

wrr-queue cos-map 1 2 0

wrr-queue cos-map 2 1 2 3 4 6 7

wrr-queue cos-map 2 2 5

mls qos trust cos

spanning-tree portfast

How/why would he have two separate cos-maps for queue 1 and queue 2 on the one interface?

[ariela · Accepted solution]

Hi,

this is a good point:

http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12225see/scg/swqos.htm#wp1023239

in detail, about wrr-queue bandwidth:

http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12225see/cr/cli3.htm#wp1971110

and about wrr-queue cos-map:

http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12225see/cr/cli3.htm#wp1971185

HTH

Andrea

[voiper_99]

Thank you both for your help.

asingh, in regards to your post in the other conversation, that person had the following setup:

interface FastEthernet4/41

switchport

switchport access vlan 50

switchport mode access

switchport voice vlan 250

no ip address

wrr-queue cos-map 1 1 1

wrr-queue cos-map 1 2 0

wrr-queue cos-map 2 1 2 3 4 6 7

wrr-queue cos-map 2 2 5

mls qos trust cos

spanning-tree portfast

How/why would he have two separate cos-maps for queue 1 and queue 2 on the one interface?

[ariela · Accepted solution]

Because on 6500 device you have 2 threshold levels for the same queue:

wrr-queue cos-map 1 1 1

wrr-queue cos-map 1 2 0

=

queue 1 threshold 1 cos 1

queue 1 threshold 2 cos 0

for more infos:

http://www.cisco.com/en/US/products/hw/switches/ps708/products_command_reference_chapter09186a00801026ef.html

HTH

Andrea

[voiper_99]

ahh I see. Thank you for the information Andrea.