Enterprise QoS Solution Reference Network Design Guide

Catalyst 6500 PFC2/PFC3—QoS Considerations and Design
2-106
CAT6500-PFC3-IOS(config-if)# wrr-queue cos-map 1 1 1
! Assigns Scavenger/Bulk to Q1T1
CAT6500-PFC3-IOS(config-if)# wrr-queue cos-map 1 2 0
! Assigns Best Effort to Q1T2
CAT6500-PFC3-IOS(config-if)# wrr-queue cos-map 2 1 2 3 4 6 7
! Assigns CoS 2,3,4,6 and 7 to Q2T1
CAT6500-PFC3-IOS(config-if)# wrr-queue cos-map 2 2 5
! Assigns VoIP to Q2T2
CAT6500-PFC3-IOS(config-if)#end
CAT6500-PFC3-IOS#
Catalyst 6500 MLS QoS Verification Commands:
show queueing interface
Catalyst 6500 IOS QoS Verification Command: show queueing interface
Enterprise QoS Solution Reference Network Design Guide
Chapter 2 Campus QoS Design
The Catalyst 6500 IOS show queueing interface verification command displays the queuing parameters
for a given interface (according to the linecard’s capabilities).
In the example below, the linecard has 2Q2T transmit queuing. The WRR scheduling weights are set to
30:70 to service Q1 and Q2, respectively. The transmit queue size ratios have been allocated 30% for Q1
and 70 percent for Q2. The first queue’s tail-drop thresholds are set to 40% and 100%, while the second
queue’s tail-drop thresholds are set to 80% and 100%. CoS 1 is assigned to Q1T1; CoS 0 is assigned to
Q1T2; CoS values 2,3,4,6 and 7 are assigned to Q2T1 and CoS 5 is assigned to Q2T2.
Example 2-68 Show Queueing Interface Verification for a Catalyst 6500-IOS Switch
CAT6500-PFC3-IOS#show queueing interface FastEthernet6/1
Interface FastEthernet6/1 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 = 2q2t]:
Queue Id Scheduling Num of thresholds
-----------------------------------------
1 WRR low 2
2 WRR high 2
WRR bandwidth ratios: 30[queue 1] 70[queue 2]
queue-limit ratios: 30[queue 1] 70[queue 2]
queue tail-drop-thresholds
--------------------------
1 40[1] 100[2]
2 80[1] 100[2]
queue thresh cos-map
---------------------------------------
1 1 1
1 2 0
2 1 2 3 4 6 7
2 2 5
CAT6500-PFC3-IOS#
Version 3.3