Reference Guide

CPU Queue Protocols Mapped to Control Processor Queues Rate Limit (in kbps)
0 TTL0, IP options, L3 Broadcast MAC destination address 1000
1 L3 MTU Fail 200
2 ARP request, NS, RS 1800
3 ARP reply, NA, RA 1800
4 FTP, Telnet, SSH, Local terminated, NTP, VLT IPM PDU, VLT ARPM 2800
5 ICMPv6 300
6 ICMP 300
7 DHCP, LLDP, FEFD, 8021x 3200
CPU Queue Protocols Mapped to Route Processor Queues Rate Limit (in kbps)
8 Unknown L3, L3 with Broadcast MAC destination address 400
9 PIM DR, Multicast Catch All, iSCSI, IPv6 Multicast Catch All, IPv6
Multicast tunnels
400
10 ARP request, NS, RS 1800
11 ARP reply, NA, RA 1800
12 VLT 2000
13 BFD 5200
14 PVST, GVRP, FCoE, OpenFlow, IGMP, PIM, MLD, MSDP 1850
15 STP, L2PT, LACP, ECFM, BGP, RIP, OSPF, IS-IS, VRRP 12450
CPU Queue Protocols Mapped to Line-Card CPU Queues Rate Limit (in kbps)
16 — 1
17 — 1
18 — 1
19 — 1
20 Source miss, Station move, Trace flow 600
21 BFD 7000
22 HyperPull, FRRP 800
23 sFlow 5000
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.
Control Plane Policing (CoPP)
187