Dell C1048P Port Extender Networking Configuration Guide for the C9000 Series - Page 554
Important Points to Remember, LLDP Compatibility, CONFIGURATION versus INTERFACE Configurations
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• Configuring LLDPDU Intervals • Configuring Transmit and Receive Mode • Configuring a Time to Live • Debugging LLDP Important Points to Remember • LLDP is enabled by default. • Dell Networking systems support up to eight neighbors per interface. • Dell 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 configure more than 8000. • INTERFACE level configurations override all CONFIGURATION level configurations. • 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 Configurations All LLDP configuration commands are available in PROTOCOL LLDP mode, which is a sub-mode of the CONFIGURATION mode and INTERFACE mode. • Configurations made at the CONFIGURATION level are global; that is, they affect all interfaces on the system. • Configurations made at the INTERFACE level affect only the specific interface; they override CONFIGURATION level configurations. 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 R1(conf-lldp)#exit R1(conf)#interface tengigabitethernet 1/31 R1(conf-if-te-1/31)#protocol lldp R1(conf-if-te-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-te-1/31-lldp) #R1(conf)#protocol lldp Link Layer Discovery Protocol (LLDP) 554
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