QoS config explanation

saurabh_knl · ‎12-07-2009

Hi,

I am looking to find detail of the below two types of config on an cisco6500 switch.

1.

no wrr-queue random-detect 2
no wrr-queue random-detect 3
wrr-queue cos-map 1 3 0
wrr-queue cos-map 2 2 4
wrr-queue cos-map 3 1 3
wrr-queue cos-map 3 2 7
wrr-queue cos-map 3 3 6

2.

ip route-cache flow
carrier-delay msec 0
wrr-queue bandwidth 20 30 40
wrr-queue queue-limit 40 30 15
wrr-queue threshold 2 60 80 100 100 100 100 100 100
wrr-queue threshold 3 60 80 100 100 100 100 100 100
wrr-queue random-detect min-threshold 1 40 60 80 80 80 80 80 80
wrr-queue random-detect min-threshold 2 59 79 99 100 100 100 100 100
wrr-queue random-detect min-threshold 3 59 79 99 100 100 100 100 100
wrr-queue random-detect max-threshold 1 70 80 100 100 100 100 100 100
wrr-queue random-detect max-threshold 2 60 80 100 100 100 100 100 100
wrr-queue random-detect max-threshold 3 60 80 100 100 100 100 100 100
no wrr-queue random-detect 2
no wrr-queue random-detect 3
wrr-queue cos-map 1 3 0
wrr-queue cos-map 2 2 4
wrr-queue cos-map 3 1 3
wrr-queue cos-map 3 2 7
wrr-queue cos-map 3 3 6
mls qos trust dscp

Thanks

Ganesh Hariharan · ‎12-08-2009

Hi Sourabh,

For explanation for each command check out the below link hope this will clear your query !!

http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.1E/native/command/reference/W1.html

Regards

Ganesh.H

saurabh_knl · ‎12-08-2009

Hi,

Thanks for the link.

I have gone through many such links, however, they are not given in detail.

For instance,

The defaults are as follows:

•Receive queue 1/drop threshold 1 and transmit queue 1/drop threshold 1: CoS 0 and 1.

•Receive queue 1/drop threshold 2 and transmit queue 1/drop threshold 2: CoS 2 and 3.

•Receive queue 2/drop threshold 3 and transmit queue 2/drop threshold 1: CoS 4 and 6.

•Receive queue 2/drop threshold 4 and transmit queue 2/drop threshold 2: CoS 7.

•On 1p1q4t, 1p2q2t, and 1p3q1t interfaces, CoS 5 is mapped to the strict-priority queues.

I would have understood had there been an example with that.

Similarly, the other commands also have many grey areas for my proper understanding.

I'll appreicate if you provide a more detailed link / explanation, if possible, in the regard.

Thanks