Reference Guide

574 | Link Layer Discovery Protocol
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CONFIGURATION versus INTERFACE Configurations
All LLDP configuration commands are available in PROTOCOL LLDP mode, which is a sub-mode of
CONFIGURATION mode and INTERFACE mode.
• Configurations made at CONFIGURATION level are global, that is, they affect all interfaces on the
system.
• Configurations made at INTERFACE level affect only the specific interface, and they override
CONFIGURATION level configurations.
R1(conf)#protocol lldp
R1(conf-lldp)#?
advertise Advertise TLVs
disable Disable LLDP protocol globally
end Exit from configuration mode
exit Exit from LLDP configuration mode
hello LLDP hello configuration
mode LLDP mode configuration (default = rx and tx)
multiplier LLDP multiplier configuration
no Negate a command or set its defaults
show Show LLDP configuration
R1(conf-lldp)#exit
R1(conf)#interface gigabitethernet 1/31
R1(conf-if-gi-1/31)#protocol lldp
R1(conf-if-gi-1/31-lldp)#?
advertise Advertise TLVs
disable Disable LLDP protocol on this interface
end Exit from configuration mode
exit Exit from LLDP configuration mode
hello LLDP hello configuration
mode LLDP mode configuration (default = rx and tx)
multiplier LLDP multiplier configuration
no Negate a command or set its defaults
show Show LLDP configuration
R1(conf-if-gi-1/31-lldp)#
Enabling LLDP
LLDP is disabled by default. LLDP can be enabled and disabled globally or per interface. If LLDP is
enabled globally, all up interfaces send periodic LLDPDUs. To enable LLDP:
Disabling and Undoing LLDP
• Disable LLDP globally or for an interface using the command disable.
• Undo an LLDP configuration by preceding the relevant command with the keyword
no.
Step Task Command Command Mode
1 Enter Protocol LLDP mode. protocol lldp CONFIGURATION or INTERFACE
2 Enable LLDP. no disable PROTOCOL LLDP