Dell C1048P Port Extender Networking Configuration Guide for the C9000 Series - Page 238
Troubleshooting CoPP Operation, Enabling CPU Traffic Statistics
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MULTICAST CATCH ALL Q7 ACL LOGGING Q17 L3 HEADER ERROR/TTL0 Q0 IP OPTION/TTL1 Q0 VLAN L3 MTU FAIL Q0 Physical L3 MTU FAIL Q0 SOURCE MISS Q16 STATION MOVE Q16 SFLOW_EGRESS Q20 SFLOW_INGRESS Q20 RP 200 200 LP 200 200 CP 200 200 CP 100 100 CP 200 200 CP 200 200 LP 200 200 LP 200 200 LP 5000 5000 LP 5000 5000 500 1000 500 500 500 500 500 500 3000 3000 Troubleshooting CoPP Operation To troubleshoot CoPP operation, use the debug commands described in this section. 500 1000 500 500 500 500 500 500 3000 3000 Enabling CPU Traffic Statistics During high-traffic network conditions, you may want to manually enable the collection of CPU traffic statistics by entering the debug cpu-traffic-stats command. Statistic collection begins as soon as you enter the command, not when the system boots up. The following message is displayed when the collection of CPU traffic statistics is enabled. Use the show cpu-trafficstats command to view the statistics. Excessive traffic is received by CPU and traffic will be rate controlled. NOTE: You must manually enable the collection of CPU traffic statistics with the debug cpu-traffic-stats command before the statistics display in show cpu-traffic-stats output. It is recommended that when you finish CoPP troubleshooting, you disable the collection of CPU traffic statistics by entering the no debug cpu-traffic-stats command. Viewing CPU Traffic Statistics To view the statistics collected on CPU traffic, use the show cpu-traffic-stats [cp | rp |all] command. Traffic statistics are sorted on a per-interface basis; the interface receiving the most traffic is displayed first. All CPU and port information is displayed unless you specify a port or CPU queue. Traffic information is displayed for router ports only, not for management interfaces. CPU traffic statistics are collected only after you enter the debug cpu-traffic-stats command, not from when the system boots up. Dell#show cpu-traffic-stats Processor : CP Received 100% traffic on fortyGigE 2/12 LLC:0, SNAP:0, IP:5, ARP:0, other:3 Unicast:5, Multicast:3, Broadcast:0 Total packets:8 Processor : RP Received 100% traffic on fortyGigE 2/12 Total packets:168 LLC:0, SNAP:0, IP:165, ARP:0, other:3 Unicast:42, Multicast:126, Broadcast:0 NOTE: When you finish troubleshooting CoPP operation, disable the collection of CPU traffic statistics by entering the no debug cpu-traffic-stats command. Control Plane Policing (CoPP) 238
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