Cisco Catalyst 4500 Series Command Reference Guide

2-180
Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.4.0SG and IOS 15.1(2)SG)
OL-27596 -01
Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
debug udld
debug udld
To enable the debugging of UDLD activity, use the debug udld command. To disable the debugging
output, use the no form of this command.
debug udld {events | packets | registries}
no debug udld {events | packets | registries}
Syntax Description
Defaults This command has no default settings.
Command Modes Privileged EXEC mode
Command History
Usage Guidelines This command is supportedonly on the supervisor engine and enterable only from the switch console.
Examples This example shows how to debug the UDLD events:
Switch# debug udld events
UDLD events debugging is on
Switch#
This example shows how to debug the UDLD packets:
Switch# debug udld packets
UDLD packets debugging is on
Switch#
This example shows how to debug the UDLD registry events:
Switch# debug udld registries
UDLD registries debugging is on
Switch#
events Enables the debugging of UDLD process events as they occur.
packets Enables the debugging of the UDLD process as it receives packets from the packet queue
and attempts to transmit packets at the request of the UDLD protocol code.
registries Enables the debugging of the UDLD process as it processes registry upcalls from the
UDLD process-dependent module and other feature modules.
Release Modification
12.1(8a)EW Support for this command was introduced on the Catalyst 4500 series switch.

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