Dell PowerSwitch S5212F-ON EMC SmartFabric OS10 User Guide Release 10.5.0 - Page 1277
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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 Converged data center services 1277
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