Cisco N5K-C5010P-BF Troubleshooting Guide - Page 65
At the Nexus 2148 egress direction, the FEX assigns voice traffic to the priority queue.
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Chapter 4 Troubleshooting QoS Issues Improper Configurations Send document comments to [email protected]. set cos 6 mtu 9216 class type network-qos class-default mtu 9216 The configuration classifies the incoming voice traffic based on DSCP and marks the voice traffic to CoS 5. At the Nexus 2148 egress direction, the FEX assigns voice traffic to the priority queue. The following is example output from the show queuing interface command for the Nexus 2148 with the above configuration. Example: switch# sh queuing interface ethernet 199/1/1 Ethernet199/1/1 queuing information: Input buffer allocation: Qos-group: 0 2 3 4 (shared) frh: 3 drop-type: drop cos: 0 1 2 3 4 6 7 xon xoff buffer-size 16640 33280 56320 Qos-group: 5 frh: 2 drop-type: no-drop cos: 5 xon xoff buffer-size 8960 19200 34560 Queueing: queue qos-group cos priority bandwidth mtu 3 0 2 3 4 0 1 2 3 4 6 WRR 100 9280 2 5 5 PRI 0 1600 Buffer threshold: 271360 bytes Queue limit: Disabled Queue Statistics: queue rx 3 241439087 2 0 Port Statistics: tx queue drop 0 Priority-flow-control enabled: no Flow-control status: cos qos-group rx pause tx pause masked rx pause 0 0 xon xon xon 1 2 xon xon xon 2 0 xon xon xon 3 0 xon xon xon 4 4 xon xon xon 5 5 xon xon xon 6 3 xon xon xon 7 n/a xon xon xon OL-25300-01 Cisco Nexus 5000 Series Troubleshooting Guide 4-7