show cdp neighbors

To display information about neighbors, use the show cdp neighbors privileged EXEC command.

show cdp neighbors [type number] [detail]

Syntax Description

type

(Optional) Type of the interface connected to the neighbors about which you want information.

number

(Optional) Number of the interface connected to the neighbors about which you want information.

detail

(Optional) Displays detailed information about a neighbor (or neighbors) including network address, enabled protocols, hold time, and software version.

Command Modes

Privileged EXEC

Command History
Release Modification

10.3

This command was introduced.

Examples

The following is sample output from the show cdp neighbors command. Device ID, interface type and number, holdtime settings, capabilities, platform, and port ID information about neighbors is displayed.

Router# show cdp neighbors

 
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
                  S - Switch, H - Host, I - IGMP, r - Repeater
 
Device ID        Local Intrfce     Holdtme    Capability  Platform  Port ID
device1.cisco.com   Eth 0/1        122          T S       WS-C2900  2/11
device2.cisco.com   Eth 0/1        179           R        4500      Eth 0
device3.cisco.com   Eth 0/1        155           R        2500      Eth 0
device4.cisco.com   Eth 0/1        155           R        2509      Eth 0

The following is sample output for one neighbor from the show cdp neighbors detail command. Additional detail is shown about neighbors, including network address, enabled protocols, and software version:

Router# show cdp neighbors detail 

 
-------------------------
Device ID: device2.cisco.com
Entry address(es):
  IP address: 171.68.162.134
Platform: cisco 4500,  Capabilities: Router
Interface: Ethernet0/1,  Port ID (outgoing port): Ethernet0
Holdtime : 156 sec
 
Version :
Cisco Internetwork Operating System Software
IOS (tm) 4500 Software (C4500-J-M), Version 11.1(10.4), MAINTENANCE INTERIM SOFTWARE
Copyright (c) 1986-1997 by Cisco Systems, Inc.
Compiled Mon 07-Apr-97 19:51 by dschwart

Related Commands
Command Description

show cdp

"Displays global CDP information, including timer and hold-time information."

show cdp entry

Displays information about a neighbor device listed in the CDP table.

show cdp interface

Displays information about the interfaces on which CDP is enabled.

show cdp traffic

Displays traffic information from the CDP table.