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New Member

if a cos is not mapped to queue, is there a default queue it goes to?

I have seen this configuration at one of my clients network, the switch is an old 6509 with sup 32 8GE, the problem is who ever did it, he did not configure the priority queue out and he did not map CoS 5 to anything:

!

interface GigabitEthernet5/7

description link to data center...

ip address 10.1.1.1 255.255.255.0

ip nbar protocol-discovery

ip route-cache flow

logging event link-status

load-interval 30

wrr-queue bandwidth percent 21 31 48

wrr-queue random-detect min-threshold 1 40 70 100 100 100 100 100 100

wrr-queue random-detect min-threshold 2 40 70 100 100 100 100 100 100

wrr-queue random-detect min-threshold 3 40 70 100 100 100 100 100 100

wrr-queue random-detect max-threshold 2 100 100 100 100 100 100 100 100

wrr-queue cos-map 1 1 1

wrr-queue cos-map 1 2 0

wrr-queue cos-map 2 2 4

wrr-queue cos-map 3 1 3

wrr-queue cos-map 3 2 6 7

mls qos trust dscp

spanning-tree bpduguard disable

end

the question is, where cos 5 packet are going to now???? basically if we don't map a CoS value to a queue. is there a default queue it goes to and what will be the tresholds?

Thanks in advance.

Mo

1 ACCEPTED SOLUTION

Accepted Solutions
Silver

if a cos is not mapped to queue, is there a default queue it goe

please run this command " Show queueing interface Gi5/7" to find out more about where pakets with cos 5 are queueing.

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Posted by WebUser Neeraj Jagga from Cisco Support Community App

3 REPLIES
Silver

if a cos is not mapped to queue, is there a default queue it goe

please run this command " Show queueing interface Gi5/7" to find out more about where pakets with cos 5 are queueing.

---

Posted by WebUser Neeraj Jagga from Cisco Support Community App

New Member

if a cos is not mapped to queue, is there a default queue it goe

thank you very much

Super Bronze

if a cos is not mapped to queue, is there a default queue it goe

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Posting

Yes, there's a device default; can vary based on line card.  Neeraj's info should provide the specifics.

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