Cisco Catalyst 4500 Series Configuration Guide

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Software Configuration Guide—Release IOS XE 3.3.0SG and IOS 15.1(1)SG
OL-25340-01
Chapter 48 Configuring Control Plane Policing and Layer 2 Control Packet QoS
Configuring Layer 2 Control Packet QoS
Switch(config-if-vlan-range)# exit
Switch(config-if)# exit
Switch(config)# exit
Switch# show policy-map interface gi3/1
GigabitEthernet3/1 vlan 1
Service-policy input: police_cdp
Class-map: system-control-packet-cdp-vtp (match-any)
0 packets
Match: access-group name system-control-packet-cdp-vtp
0 packets
police:
cir 32000 bps, bc 1500 bytes
conformed 0 packets, 0 bytes; actions:
transmit
exceeded 0 packets, 0 bytes; actions:
drop
conformed 0000 bps, exceed 0000 bps
Class-map: class-default (match-any)
0 packets
Disabling Layer 2 Control Packet QoS
The no qos control-packet command disables QoS for all packet types.
The following example shows how to disable QoS for CDP packets after QoS is enabled for all packet
types:
Switch# show running-configuration | include qos control-packets
qos control-packets bpdu-range
qos control-packets cdp-vtp
qos control-packets lldp
qos control-packets eapol
qos control-packets sstp
qos control-packets protocol-tunnel
Note When all control packets (CDP/VTP, bpdu-range, SSTP, LLDP, and protocol-tunnel), are enabled only
qos control-packets is nevgen’d. Individual protocol names mentioned in the previous output are
nvegen’d only if the some of the control packets are configured.
Switch# config terminal
Switch(config)# no qos control-packets cdp-vtp
Switch(config)# end
Switch# show running-configuration | include qos control-packets
qos control-packets bpdu-range
qos control-packets lldp
qos control-packets sstp
qos control-packets protocol-tunnel
Note When you unconfigure this feature for a specified protocol type, the user-configured policies handling
that protocol type immediately become ineffective. To save TCAM resources, remove the policies as
well as MACLs and class maps (auto-generated or user-defined).

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