show cdp neighbors
show cdp neighbors [type number] [detail]
(Optional) Type of the interface connected to the neighbors about which you want information.
(Optional) Number of the interface connected to the neighbors about which you want information.
(Optional) Displays detailed information about a neighbor (or neighbors) including network address, enabled protocols, hold time, and software version.
To display information about neighbors, use the show cdp neighbors privileged EXEC command.
The following is a sample of 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 a sample of 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: 126.96.36.199 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
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