Cisco Catalyst 4500 Series Command Reference Guide

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Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.4.0SG and IOS 15.1(2)SG)
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Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
show udld
show udld
To display the administrative and operational UDLD status, use the show udld priviledged EXEC
command.
show udld interface-id | neighbors | fast-hello {interface id}
Syntax Description
Defaults None
Command Modes Privileged EXEC
Command History
Usage Guidelines If you do not enter an interface_id value, the administrative and operational UDLD status for all
interfaces is displayed.
Examples To verify status for a particular link as reported by UDLD, enter the following command:
Switch# show udld g1/34
Interface Gi1/34
---
Port enable administrative configuration setting: Enabled / in aggressive mode
Port enable operational state: Enabled / in aggressive mode
Current bidirectional state: Bidirectional
Current operational state: Advertisement - Single neighbor detected
Message interval: 15000 ms
Time out interval: 5000 ms
Port fast-hello configuration setting: Disabled
Port fast-hello interval: 0 ms
Port fast-hello operational state: Disabled
Neighbor fast-hello configuration setting: Disabled
Neighbor fast-hello interval: Unknown
Entry 1
---
interface id Specifies the administrative and operational UDLD status for a specific interface.
neighbors Specifies the UDLD neighbor summary.
fast-hello Specifies Fast UDLD neighbor summary and interface specific status.
interface-id Specifies the name of the interface.
Release Modification
12.1(8a)EW Support for this command was introduced on the Catalyst 4500 series switch.
12.2(25)EW Added support for the 10-Gigabit Ethernet interface.
12.2(54)SG Added support for show udld fast-hello and show udld fast-hello interface id.

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