Administrator Guide

● Transmit only.
CONFIGURATION mode or INTERFACE mode
mode tx
● Receive only.
CONFIGURATION mode or INTERFACE mode
mode rx
● Return to the default setting.
CONFIGURATION mode or INTERFACE mode
no mode
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
no disable
R1(conf-lldp)#mode ?
rx Rx only
tx Tx only
R1(conf-lldp)#mode tx
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
mode tx
no disable
R1(conf-lldp)#no mode
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
no disable
R1(conf-lldp)#
Configuring the Time to Live Value
The information received from a neighbor expires after a specific amount of time (measured in seconds) called a time to live
(TTL).
The TTL is the product of the LLDPDU transmit interval (hello) and an integer called a multiplier. The default multiplier is 4,
which results in a default TTL of 120 seconds.
● Adjust the TTL value.
CONFIGURATION mode or INTERFACE mode.
multiplier
● Return to the default multiplier value.
CONFIGURATION mode or INTERFACE mode.
no multiplier
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
no disable
R1(conf-lldp)#multiplier ?
456
Link Layer Discovery Protocol (LLDP)