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• Conguring LLDPDU Intervals
• Conguring Transmit and Receive Mode
• Conguring a Time to Live
• Debugging LLDP
Important Points to Remember
• LLDP is enabled by default.
• Dell EMC Networking systems support up to eight neighbors per interface.
• Dell EMC Networking systems support a maximum of 8000 total neighbors per system. If the number of interfaces multiplied by eight
exceeds the maximum, the system does not congure more than 8000.
• INTERFACE level congurations override all CONFIGURATION level congurations.
• LLDP is not hitless.
LLDP Compatibility
• Spanning tree and force10 ring protocol “blocked” ports allow LLDPDUs.
• 802.1X controlled ports do not allow LLDPDUs until the connected device is authenticated.
CONFIGURATION versus INTERFACE Congurations
All LLDP conguration commands are available in PROTOCOL LLDP mode, which is a sub-mode of the CONFIGURATION mode and
INTERFACE mode.
• Congurations made at the CONFIGURATION level are global; that is, they aect all interfaces on the system.
• Congurations made at the INTERFACE level aect only the specic interface; they override CONFIGURATION level congurations.
Example of the protocol lldp Command (CONFIGURATION Level)
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
DellEMC(conf-lldp)#exit
DellEMC(conf)#interface tengigabitethernet 1/3/1
DellEMC(conf-if-te-1/3/1)#protocol lldp
DellEMC(conf-if-te-1/3/1-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
DellEMC(conf-if-te-1/3/1-lldp)#
520
Link Layer Discovery Protocol (LLDP)