Reference Guide

• LLDPDU information received from a neighbor expires after the default Time to Live (TTL) value: 120
seconds.
• Dell Networking OS supports up to eight neighbors per interface.
• Dell Networking OS supports a maximum of 8000 total neighbors per system. If the number of
interfaces multiplied by eight exceeds the maximum, the system does not configure more than 8000.
• LLDP is not hitless.
Viewing the LLDP Configuration
To view the LLDP configuration, use the following command.
• Display the LLDP configuration.
CONFIGURATION or INTERFACE mode
show config
Example of Viewing LLDP Global Configurations
R1(conf)#protocol lldp
R1(conf-lldp)#show config
!
protocol lldp
advertise dot1-tlv port-protocol-vlan-id port-vlan-id
advertise dot3-tlv max-frame-size
advertise management-tlv system-capabilities system-description
hello 10
no disable
R1(conf-lldp)#
Example of Viewing LLDP Interface Configurations
R1(conf-lldp)#exit
R1(conf)#interface tengigabitethernet 0/3
R1(conf-if-te-0/3)#show config
!
interface tengigabitEthernet 0/3
no ip address
switchport
no shutdown
R1(conf-if-te-0/3)#protocol lldp
R1(conf-if-te-0/3-lldp)#show config
!
protocol lldp
R1(conf-if-te-0/3-lldp)#
Viewing Information Advertised by Adjacent LLDP Agents
To view brief information about adjacent devices or to view all the information that neighbors are
advertising, use the following commands.
• Display brief information about adjacent devices.
show lldp neighbors
• Display all of the information that neighbors are advertising.
show lldp neighbors detail
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Link Layer Discovery Protocol (LLDP)