Reference Guide

2. Apply the trust dot1p-map policy to ingress traffic in SYSTEM-QOS or INTERFACE mode.
trust-map dot1p trust-policy—map-name
Configure traffic-class-queue mapping
Decide if you want to use the default traffic-class-queue mapping or configure a non-default traffic-class-to-queue mapping.
Traffic Class : 0 1 2 3 4 5 6 7
Queue : 0 1 2 3 4 5 6 7
If you are using the default traffic-class-to-queue map, no further configuration steps are necessary.
1. Create a traffic-class-to-queue map in CONFIGURATION mode. Assign a traffic class (qos-group) to a queue in QOS-
MAP mode using 1-to-1 mappings. For a PFC traffic class, map only one qos-group value to a queue number. A
qos-group number is used only internally to classify ingress traffic.
qos—map traffic-class tc-queue-map-name
queue {0-7} qos-group {0-7}
exit
2. Apply the traffic-class-queue map in SYSTEM-QOS or INTERFACE mode.
qos-map traffic-class tc-queue-map-name
View interface PFC configuration
View PFC details on an interface.
OS10# show interface ethernet 1/1/1 priority-flow-control details
ethernet1/1/1
Admin Mode : true
Operstatus: true
PFC Priorities: 4
Total Rx PFC Frames: 0
Total Tx PFC frames: 0
Cos Rx Tx
---------------------------------------
0 0 0
1 0 0
2 0 0
3 0 0
4 0 0
5 0 0
6 0 0
7 0 0
Configure PFC
Priority flow control (PFC) provides a pause mechanism based on the 802.1p priorities in ingress traffic. PFC prevents frame
loss due to network congestion. Configure PFC lossless buffers, and enable pause frames for dot1p traffic on a per-interface
basis. Repeat the PFC configuration on each PFC-enabled interface. PFC is disabled by default.
Decide if you want to use the default dot1p-priority-to-traffic class mapping and the default traffic-class-to-queue mapping. See
PFC configuration notes to change the default settings.
Configuration steps:
1. Create PFC dot1p traffic classes.
2. Configure ingress buffers for PFC traffic.
3. Apply a service policy and enable PFC.
4. (Optional) Configure the PFC shared buffer for lossless traffic.
Create PFC dot1p traffic classes
1. Create a network-qos class map to classify PFC traffic classes in CONFIGURATION mode (1 to 7). Specify the traffic
classes using the match qos-group command. Qos-groups map 1:1 to traffic classes 1 to 7 (qos-group 1 corresponds
Converged data center services
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