qos in 10G

Unanswered Question
Dec 10th, 2008
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Hi,

I have 2Cat6506 working in VSS.


I need to give priority to traffic with DSCP = 46 (CoS = 5) in a 10G link, I've seen that QoS scheduling is:

Rx: 1p7q2t

Tx: 1p7q4t

priority queue for TX is 8. Default configuration is that traffic DSCP = 46 goes to that queue, but it is not in RX (priority queue is 8 and DSCP=46 to queue 1):


catalyst#sh queueing int ten1/7/1

Interface TenGigabitEthernet1/7/1 queueing strategy: Weighted Round-Robin

Port QoS is enabled

Port is untrusted

Extend trust state: not trusted [COS = 0]

Default COS is 0

Queueing Mode In Tx direction: mode-cos

Transmit queues [type = 1p7q4t]:

Queue Id Scheduling Num of thresholds

-----------------------------------------

01 WRR 04

02 WRR 04

03 WRR 04

04 WRR 04

05 WRR 04

06 WRR 04

07 WRR 04

08 Priority 01


...


queue thresh cos-map

---------------------------------------

1 1 0

1 2 1

1 3

1 4

2 1 2

2 2 3 4

2 3

2 4

3 1 6 7

3 2

3 3

3 4

4 1

4 2

4 3

4 4

5 1

5 2

5 3

5 4

6 1

6 2

6 3

6 4

7 1

7 2

7 3

7 4

8 1 5



queue thresh dscp-map

---------------------------------------

1 1 0 1 2 3 4 5 6 7 8 9 11 13 15 16 17 19 21 23 25 27 29 31 33 39 41 42 43 44 45 47

1 2

1 3

1 4

2 1 14

2 2 12

2 3 10

2 4

3 1 22

3 2 20

3 3 18

3 4

4 1 24 30

4 2 28

4 3 26

4 4

5 1 32 34 35 36 37 38

5 2

5 3

5 4

6 1 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63

6 2

6 3

6 4

7 1

7 2

7 3

7 4

8 1 40 46


Queueing Mode In Rx direction: mode-cos

Receive queues [type = 1p7q2t]:

Queue Id Scheduling Num of thresholds

-----------------------------------------

01 WRR 02

02 WRR 02

03 WRR 02

04 WRR 02

05 WRR 02

06 WRR 02

07 WRR 02

08 Priority 01



queue thresh cos-map

---------------------------------------

1 1 0 1 2 3 4 5 6 7

1 2

2 1

2 2

3 1

3 2

4 1

4 2

5 1

5 2

6 1

6 2

7 1

7 2

8 1



queue thresh dscp-map

---------------------------------------

1 1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63

1 2

2 1

2 2

3 1

3 2

4 1

4 2

5 1

5 2

6 1

6 2

7 1

7 2

8 1




Is ther any way to set the value DSCP = 46 in the queue 8 for RX? can be done in mode configuration or must be done in interface configuration?

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