Dell C1048P Port Extender Networking Configuration Guide for the C9000 Series - Page 253
CoPP Example, Trace Flow, Station Move, Source Miss
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Table 13. Queues 14 to 20 Process Packets Destined to the line-card CPU Service Queue CPU Type Protocols Mapped to Control Processor Queues 14 LP/LM - 15 LP/LM - 16 LP/LM Trace Flow, Station Move, Source Miss 17 LP/LM BFD, ACL LOGGING 18 LP/LM - 19 LP/LM FRRP, Hyperpull 20 LP/LM LP/LM SFLOW Rate Limit (in kbps) 1 1 1200 1200 7000 800 5000 Burst (in kbps) 4000 100 100 1000 1000 7000 1000 NOTE: In the line-card CPU, some queues have no protocol traffic mapped to them. These rows appear blank in the preceding table. CoPP Example The illustrations in this section show the benefit of using CoPP compared to not using CoPP on a switch. The following illustration shows how CoPP rate limits protocol traffic destined to the control-plane CPU. Figure 26. Control Plane Policing NOTE: On the system, CoPP does not convert the input rate of control-plane traffic from kilobits per second (kbps) to packets per second (pps) as on other Dell Networking switches. On other switch, CoPP converts the input kilobit-per-second rate to a packet-per-second rate, assuming 64 bytes as the average packet size. CoPP then applies the packet-per-second rate to the appropriate queue. On these switches, 1 kbps is approximately equal to 2 pps. The following illustration shows the difference between using CoPP and not using CoPP on a switch. Control Plane Policing (CoPP) 253
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