Reference Guide

904 | Link Layer Detection Protocol (LLDP)
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Usage
Information
LLDP must be enabled globally from CONFIGURATION mode, before it can be configured on an
interface. This command places you in LLDP mode on the interface; it does not enable the protocol.
When you enter the LLDP protocol in the Interface context, it overrides global configurations. When
you execute the no protocol lldp from the INTERFACE mode, interfaces will begin to inherit the
configuration from the global LLDP CONFIGURATION mode.
show lldp neighbors
c e s
Display LLDP neighbor information for all interfaces or a specified interface.
Syntax
show lldp neighbors [interface] [detail]
Parameters
Defaults
No default values or behavior
Command Modes
EXEC Privilege
Command
History
Example
Figure 31-1. show lldp neighbors Command Output
Usage
Information
Omitting the keyword detail displays only the remote chassis ID, Port ID, and Dead Interval.
Version 7.6.1.0 Introduced on C-Series
Version 7.4.1.0 Introduced on E-Series
interface
(OPTIONAL) Enter the following keywords and slot/port or number information:
• For a Fast Ethernet interface, enter the keyword
FastEthernet followed by the
slot/port information.
• For a 1-Gigabit Ethernet interface, enter the keyword
gigabitEthernet followed
by the slot/port information.
• For a 10-Gigabit Ethernet interface, enter the keyword
tenGigabitEthernet
followed by the slot/port information.
detail (OPTIONAL) Enter the keyword detail to display all the TLV information, timers, and
LLDP tx and rx counters.
Version 7.7.1.0 Introduced on S-Series
Version 7.6.1.0 Introduced on C-Series
Version 7.4.1.0 Introduced on E-Series
R1(conf-if-gi-1/31)#do show lldp neighbors
Loc PortID Rem Host Name Rem Port Id Rem Chassis Id
-------------------------------------------------------------------------
Gi 1/21 R2 GigabitEthernet 2/11 00:01:e8:06:95:3e
Gi 1/31 R3 GigabitEthernet 3/11 00:01:e8:09:c2:4a