Hi,
I have been researching about QoS and egress queuing configuration. And i don't fully understand the function of each command. I understand that each interface have a queues (the number depends on the model of the router or switch and also i think you can configure them) and you provision the bandwidth and the thresholds to have a better performance. If it helps the equipment i an working on is a Cisco 7609-S
So i put my comments below of how i think the commands works, and maybe you can correct or help me understand better.
wrr-queue bandwidth percent 0 0 10 12 25 50 3
!we provision 0% for queue 1, 0% for queue 2, 10% for queue 3.. and so on...
wrr-queue queue-limit 0 0 10 12 25 50 3
!Reserves the buffer space for the ques, 0% for queue 1, 0% for queue 2, 10% for queue 3... and so on..
wrr-queue random-detect min-threshold 3 70 1 1 1 1 1 1 1
!I dont understand this one :(
wrr-queue random-detect min-threshold 4 70 1 1 1 1 1 1 1
wrr-queue random-detect min-threshold 5 70 80 1 1 1 1 1 1
wrr-queue random-detect min-threshold 6 100 1 1 1 1 1 1 1
wrr-queue random-detect min-threshold 7 100 1 1 1 1 1 1 1
wrr-queue random-detect max-threshold 3 100 1 1 1 1 1 1 1
wrr-queue random-detect max-threshold 4 100 1 1 1 1 1 1 1
!I dont understand this one :(
wrr-queue random-detect max-threshold 5 90 100 1 1 1 1 1 1
wrr-queue random-detect max-threshold 6 100 1 1 1 1 1 1 1
wrr-queue random-detect max-threshold 7 100 1 1 1 1 1 1 1
wrr-queue random-detect 4
!I think we dont need this command because the commands above activate wrr on this queue.
wrr-queue random-detect 5
wrr-queue cos-map 3 1 0
!We assign de cos values 1 and 0 to the queue 3
wrr-queue cos-map 4 1 1
wrr-queue cos-map 5 1 2
wrr-queue cos-map 5 2 3
wrr-queue cos-map 6 1 4
wrr-queue cos-map 7 1 6 7
tag-switching ip
mls qos trust cos
!We tell the port tu trust the CoS field, otherwhise it wont analize de CoS field for QoS.
I am really struguling with this.
Thanks in advance.
Regards,
