Dell PowerSwitch S4128F-ON OS10 Enterprise Edition User Guide Release 10.4.0ER - Page 565
control-plane policing, ARP Requet, ICMPV6-RS-NS, ISCSI snooping, ISCSI-COS
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CoPP applies policy actions on all control-plane traffic. The control-plane class map does not use any match criteria. To enforce rate-limiting or rate policing on control-plane traffic, create policy maps. You can use the control-plane command to attach the CoPP service policies directly to the control-plane. The default rate limits apply to 12 CPU queues and the protocols mapped to each CPU queue. The control packet type to CPU ports control queue assignment is fixed. The only way you can limit the traffic towards the CPU is choose a low priority queue, and apply ratelimits on that queue to find a high rate of control traffic flowing through that queue. By default CoPP traffic towards the CPU is classified into different queues as shown in the following table. Table 11. CoPP queues Queue 0 1 2 3 4 5 6 7 8 9 10 11 Protocol IPv6 IGMP VLT, NDS ICMPv6, ICMPv4 ARP Requet, ICMPV6-RS-NS, ISCSI snooping, ISCSI-COS ICMPv6-RA-NA, SSH, TELNET,TACACS, NTP,FTP RSTP,PVST, MSTP,LACP Dot1X,LLDP, FCOE-FPORT BGPv4, OSPFv6 DHCPv6, DHCPv4, VRRP OSPF Hello, OpenFlow See show control-plane info for information on the current protocol to queue mapping and the rate-limit configured per queue. Configure control-plane policing Rate-limiting the protocol CPU queues requires configuring control-plane type QoS policies. • Create QoS policies (class maps and policy maps) for the desired CPU-bound queue. • Associate the QoS policy with a particular rate-limit. • Assign the QoS service policy to control plane queues. By default, the peak information rate (pir) and committed information rate (cir) values are in packets per second (pps) for control plane. CoPP for CPU queues converts the input rate from kilobits per second (kbps) to packets per second (pps), assuming 64 bytes is the average packet size, and applies that rate to the corresponding queue - 1 kbps is roughly equivalent to 2 pps. 1 Create a class-map of type control-plane and configure a name for the class-map in CONFIGURATION mode. class-map type control-plane class-map-name 2 Return to CONFIGURATION mode. exit Quality of service 565