priority queue config on cisco 6509 port

[carl_townshend]

Hi All

I want to configure a priority queue on one of my 6509 ports, I want EF to have up to 33% of the 1 gig link.

What are the commands on the 6509 to do this?

I applied the auto qos on the port and it provided me the following output, can you tell me which one is the priority queue below and what is assigned to what?

wrr-queue bandwidth 20 100 200
priority-queue queue-limit 5
wrr-queue queue-limit 65 15 15
wrr-queue random-detect min-threshold 1 70 100 100 100 100 100 100 100
wrr-queue random-detect min-threshold 2 70 100 100 100 100 100 100 100
wrr-queue random-detect min-threshold 3 40 40 50 50 60 60 70 70
wrr-queue random-detect max-threshold 1 100 100 100 100 100 100 100 100
wrr-queue random-detect max-threshold 2 100 100 100 100 100 100 100 100
wrr-queue random-detect max-threshold 3 70 70 80 80 90 90 100 100
wrr-queue cos-map 2 1 1 2
wrr-queue cos-map 3 5 3 4
wrr-queue cos-map 3 7 6 7
rcv-queue cos-map 1 2 1
rcv-queue cos-map 1 3 2
rcv-queue cos-map 1 4 3
rcv-queue cos-map 1 5 4
rcv-queue cos-map 1 6 5
rcv-queue cos-map 1 7 6
rcv-queue cos-map 1 8 7
mls qos trust cos

Cheers

[Giuseppe Larosa]

Hello Carl,

when dealing with QoS on C6500 we need to know what model of linecard is involved as different capabilities are present in different linecards.

can you post the show module for the slot where the port is present?

A priority queue looks like configured but I cannot say on first sight which queue is the priority queue.

Knowing the linecard model should allow to understand this.

We can say that this port works on L2 CoS bits and not on DSCP.

So DSCP EF ---> CoS 5

Hope to help

Giuseppe

[carl_townshend]

Hi there

The line card is WS-X6748-SFP

Which queue would be the priority queue in this case?

Also are there any commands to see what is happening with the QOS, similar to the show policy map interface command?

cheers

[Mark Malone]

Hi
queue 4 is priority queue on those blades , you can see with below command

Queue 4 COS 5 EF
queue dropped [cos-map]
------------------------------------------------------------

1 16578 [0 1 ]
2 0 [2 3 4 ]
3 0 [6 7 ]
4 0 [5 ]



#################################
sh queueing int g1/4/1
Interface GigabitEthernet1/4/1 queueing strategy: Weighted Round-Robin

Port QoS is enabled globally
Queueing on Gi1/4/1: Tx Enabled Rx Enabled

Trust boundary disabled

Trust state: trust DSCP
Trust state in queueing: trust COS
Extend trust state: not trusted [COS = 0]
Default COS is 0
Queueing Mode In Tx direction: mode-cos
Transmit queues [type = 1p3q8t]:
Queue Id Scheduling Num of thresholds
-----------------------------------------
01 WRR 08
02 WRR 08
03 WRR 08
04 Priority 01

WRR bandwidth ratios: 100[queue 1] 150[queue 2] 200[queue 3]
queue-limit ratios: 50[queue 1] 20[queue 2] 15[queue 3] 15[Pri Queue]

queue tail-drop-thresholds
--------------------------
1 70[1] 100[2] 100[3] 100[4] 100[5] 100[6] 100[7] 100[8]
2 70[1] 100[2] 100[3] 100[4] 100[5] 100[6] 100[7] 100[8]
3 100[1] 100[2] 100[3] 100[4] 100[5] 100[6] 100[7] 100[8]

queue random-detect-min-thresholds
----------------------------------
1 40[1] 70[2] 70[3] 70[4] 70[5] 70[6] 70[7] 70[8]
2 40[1] 70[2] 70[3] 70[4] 70[5] 70[6] 70[7] 70[8]
3 70[1] 70[2] 70[3] 70[4] 70[5] 70[6] 70[7] 70[8]

queue random-detect-max-thresholds
----------------------------------
1 70[1] 100[2] 100[3] 100[4] 100[5] 100[6] 100[7] 100[8]
2 70[1] 100[2] 100[3] 100[4] 100[5] 100[6] 100[7] 100[8]
3 100[1] 100[2] 100[3] 100[4] 100[5] 100[6] 100[7] 100[8]

WRED disabled queues:

queue thresh cos-map
---------------------------------------
1 1 0
1 2 1
1 3
1 4
1 5
1 6
1 7
1 8
2 1 2
2 2 3 4
2 3
2 4
2 5
2 6
2 7
2 8
3 1 6 7
3 2
3 3
3 4
3 5
3 6
3 7
3 8
4 1 5

Queueing Mode In Rx direction: mode-cos
Receive queues [type = 2q8t]:
Queue Id Scheduling Num of thresholds
-----------------------------------------
01 WRR 08
02 WRR 08

WRR bandwidth ratios: 10[queue 1] 90[queue 2]
queue-limit ratios: 80[queue 1] 20[queue 2]

queue tail-drop-thresholds
--------------------------
1 70[1] 80[2] 90[3] 100[4] 100[5] 100[6] 100[7] 100[8]
2 100[1] 100[2] 100[3] 100[4] 100[5] 100[6] 100[7] 100[8]

queue thresh cos-map
---------------------------------------
1 1 0 1
1 2 2 3
1 3 4
1 4 6 7
1 5
1 6
1 7
1 8
2 1 5
2 2
2 3
2 4
2 5
2 6
2 7
2 8


Packets dropped on Transmit:
BPDU packets: 0

queue dropped [cos-map]
------------------------------------------------------------

1 16578 [0 1 ]
2 0 [2 3 4 ]
3 0 [6 7 ]
4 0 [5 ]

Packets dropped on Receive:
BPDU packets: 0

queue dropped [cos-map]
------------------------------------------------------------
1 1578 [0 1 2 3 4 6 7 ]
2 0 [5 ]
#sh mod 4
Mod Ports Card Type Model Serial No.
--- ----- -------------------------------------- ------------------ -----------
4 48 CEF720 48 port 1000mb SFP WS-X6748-SFP SAL1118NAXF