Cisco Catalyst 4500 Series Administration Guide

51-14
Software Configuration Guide—Release IOS XE 3.6.0E and IOS 15.2(2)E
OL_28731-01
Chapter 51 Configuring Control Plane Policing and Layer 2 Control Packet QoS
Configuring Layer 2 Control Packet QoS
Note TCAM resources are not consumed when the interface is in a down state.
Table 51-2 displays the auto-generated MACLs and class maps that are created when you enable the
feature on the corresponding packet type.
Layer 2 Control Packet QoS Configuration Examples
You can use CoPP and Layer 2 control packet QoS together to prevent DoS attacks to the CPU. In the
following example, BPDUs arriving on interface gi3/1, VLAN 1 and VLAN 2 are limited to 32 Kbps and
34 Kbps, respectively. Aggregate BPDU traffic to CPU then is further rate-limited to 50 Kbps using
CoPP.
Switch(config)# qos control-packets
Table 51-2 Packet Types and Auto-Generated MACL/Class Maps
Packet Type Auto-Generated MACL/Class Map
BPDU-range mac access-list extended system-control-packet-bpdu-range
permit any 0180.c200.0000 0000.0000.000c
class-map match-any system-control-packet-bpdu-range
match access-group name system-control-packet-bpdu-range
SSTP mac access-list extended system-control-packet-sstp
permit any host 0100.0ccc.cccd
class-map match-any system-control-packet-sstp
match access-group name system-control-packet-sstp
CDP-VTP mac access-list extended system-control-packet-cdp-vtp
permit any host 0100.0ccc.cccc
class-map match-any system-control-packet-cdp-vtp
match access-group name system-control-packet-cdp-vtp
EAPOL mac access-list extended system-control-packet-eapol
permit any any 0x888E
class-map match-any system-control-packet-eapol
match access-group name system-control-packet-eapol
LLDP mac access-list extended system-control-packet-lldp
permit any host 0180.c200.000e
class-map match-any system-control-packet-lldp
match access-group name system-control-packet-lldp
PROTOCOL
TUNNEL
mac access-list extended system-control-packet-protocol-tunnel
permit any host 0100.0ccd.cdd0
class-map match-any system-control-packet-protocol-tunnel
match access-group name system-control-packet-protocol-tunnel

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E