Users Guide

2 2 Both
3 3 Both
4 4 Both
5 5 Both
6 6 Both
7 7 Both
View the interface PFC configuration
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
PFC provides a pause mechanism that is 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. To change
the default settings, see PFC configuration notes.
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, from 1 to 7. Specify the traffic classes
using the match qos-group command. QoS-groups map 1:1 to traffic classes 1 to 7; for example, qos-group 1 corresponds to
traffic class 1. Enter a single value, a hyphen-separated range, or multiple
qos-group values separated by commas in CLASS-MAP
mode.
class—map type network-qos class—map-name
match qos-group {1-7}
exit
2. (Optional) Repeat Step 1 to configure additional PFC traffic-class class-maps.
Configure pause and ingress buffers for PFC traffic
For the default ingress queue settings and the default dot1p priority-queue mapping, see PFC configuration notes.
1. Create a network-qos policy map in CONFIGURATION mode.
policy-map type network-qos policy—map-name
2. Associate the policy-map with a network-qos class map in POLICY-MAP mode.
class class-map-name
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