Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Attention: The Community will be in read-only mode on 12/14/2017 from 12:00 am pacific to 11:30 am.

During this time you will only be able to see content. Other interactions such as posting, replying to questions, or marking content as helpful will be disabled for few hours.

We apologize for the inconvenience while we perform important updates to the Community.

New Member

QOS 4506 tx-queue 3

QOS priority help

How can I map dscp 38 to tx-queue 3

I can do the following:

qos map dscp 38 to tx-queue 3

but not

qos map dscp 38 to tx-queue 4

1 REPLY
Cisco Employee

Re: QOS 4506 tx-queue 3

Hello,

The reason could be due to the fact 
that dscp mapping you are trying to
configured are already pre-configured by default.
So only the non-standard/non-default configurations will shows up
in the configuration. 

The statements which change the default mapping will be show in config,
while the others (default) do not. 
You can check this via CLI command:

"show qos map dscp tx-queue"

For example:
-----
! DCHP int the output is the combination of d1d2
So from the table it could be see that due to the change
the dscp38 now gets mapped into tx-queue 4:

#show qos map dscp tx-queue
DSCP-TxQueue Mapping Table (dscp = d1d2)
d1 : d2  0  1  2  3  4  5  6  7  8  9
-------------------------------------
0 :    01 01 01 01 01 01 01 01 01 01
1 :    01 01 01 01 01 01 02 02 02 02
2 :    02 02 02 02 02 02 02 02 02 02
3 :    02 02 03 03 03 03 03 03 04 03 
4 :    03 03 03 03 03 03 03 03 04 04
5 :    04 04 04 04 04 04 04 04 04 04
6 :    04 04 04 04

#sh running-config | inc qos
qos map dscp 38 to tx-queue 4

-----

Thanks,

Sergey

1510
Views
0
Helpful
1
Replies
CreatePlease to create content