Cisco 7604 Configuration Manual page 710

Configuring PFC QoS
Mapping CoS Values to Tail-Drop Thresholds on 1q4t/2q2t LAN Ports
Enter the show queueing interface {ethernet | fastethernet | gigabitethernet | tengigabitethernet}
Note
slot/port | include type command to see the queue structure of a port.
On 1q4t/2q2t LAN ports, the receive- and transmit-queue tail-drop thresholds have this relationship:
•
•
•
•
To map CoS values to tail-drop thresholds, perform this task:
Command
Step 1
Router(config)# interface type
Step 2
Router(config-if)# wrr-queue cos-map
transmit_queue_# threshold_# cos1 [ cos2 [ cos3
[ cos4 [ cos5 [ cos6 [ cos7 [ cos8 ]]]]]]]
Step 3
Router(config-if)# no wrr-queue cos-map
Step 4
Router(config-if)# end
Step 5
Router# show queueing interface type
1. type = ethernet, fastethernet, gigabitethernet, or tengigabitethernet
When mapping CoS values to a tail-drop threshold, note the following information:
•
•
•
•
•
This example shows how to map the CoS values 0 and 1 to standard transmit queue 1/threshold 1 for Fast
Ethernet port 5/36:
Router# configure terminal
Enter configuration commands, one per line.
Router(config)# interface fastethernet 5/36
Router(config-if)# wrr-queue cos-map 1 1 0 1
Router(config-if)# end
Router#
This example shows how to verify the configuration:
Router# show queueing interface fastethernet 5/36 | begin queue thresh cos-map
<...Output Truncated...>
Router#
Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX
41-108
Receive queue 1 (standard) threshold 1 = transmit queue 1 (standard low priority) threshold 1
Receive queue 1 (standard) threshold 2 = transmit queue 1 (standard low priority) threshold 2
Receive queue 1 (standard) threshold 3 = transmit queue 2 (standard high priority) threshold 1
Receive queue 1 (standard) threshold 4 = transmit queue 2 (standard high priority) threshold 2
1
slot/port
1
slot/port
Use the transmit queue and threshold numbers.
Queue 1 is the low-priority standard transmit queue.
Queue 2 is the high-priority standard transmit queue.
There are two thresholds in each queue.
Enter up to 8 CoS values to map to the threshold.
queue thresh cos-map
---------------------------------------
1 1 0 1
1 2 2 3
2 1 4 5
2 2 6 7
Purpose
Selects the interface to configure.
Maps CoS values to a tail-drop threshold.
Reverts to the default mapping.
Exits configuration mode.
Verifies the configuration.
End with CNTL/Z.
Chapter 41 Configuring PFC QoS
OL-4266-08