display cdp neighbor

Function

The display cdp neighbor command displays information about CDP neighbors of all interfaces or a specified interface.

Format

display cdp neighbor [ interface interface-type interface-number ]

Parameters

Parameter	Description	Value
interface interface-type interface-number	Displays information about CDP neighbors of a specified interface. interface-type specifies the interface type. interface-number specifies the interface number. If this parameter is not specified, the command displays information about CDP neighbors of all interfaces.	-

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

Usage Scenario

This command enables you to know which CDP neighbors the local device has, Layer 2 information about the neighbors, and to which interfaces the neighbors connect. You can also use this command to check whether the Layer 2 information is configured correctly on the neighbors.

Prerequisites

LLDP has been enabled globally using the lldp enable command, and LLDP compatibility with CDP has been enabled on the specified interface using the lldp compliance cdp receive command.

Example

# Display information about CDP neighbors of all the interfaces.

<HUAWEI> display cdp neighbor
GigabitEthernet0/0/1 has 1 neighbor(s):
                       
Neighbor index :1       
Device ID                :ME3400  
Port ID                  :GigabitEthernet0/4 
Version                  :SCCP75.8-3-3SR2S
Platform                 :cisco ME-3400EG-2CS-A
Capabilities             :host
MacAddress               :b4a4-e3cf-e984
Discovered time          :0 days, 22 hours, 33 minutes, 36 seconds     
Expired time             :122                                
Power drawn              :12000 mw 
Power request ID         :39308 
Power management ID      :2 
Power request levels     :12000 mw 0 mw
  ---- More ----

**Table 1** Description of the **display cdp neighbor** command output
Item	Description
m has n neighbor(s)	The interface m has n CDP neighbors.
Neighbor index	Index of a CDP neighbor.
Device ID	ID of the CDP neighbor.
Port ID	Interface of the CDP neighbor connecting to the switch.
Version	Version of the CDP neighbor.
Platform	Software platform of the CDP neighbor.
Capabilities	Type of the CDP neighbor: router trans-bridge switch host igmp repeater phone other
MacAddress	MAC address of the CDP neighbor.
Discovered time	Time when the CDP neighbor was discovered, that is, the time difference between the system time when the device discovers the CDP neighbor and the startup time of the switch.
Expired time	The aging time remaining of CDP neighbor, in seconds.
Power drawn	Power set on the source.
Power request ID	Requested power ID.
Power management ID	ID used to manage power. The ID is the number of times the power is changed.
Power request levels	Requested power level. The maximum power among the negotiated power values is selected.