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How LLDP / LLDP-MED Works (10,000 m view) Very simple / robust Simple one-way periodic advertisement, no Ack/Nak, command/response, etc. Frames contain formatted records (TLVs) Simple time-to-live mechanism for data aging “Fast Start” protocol mechanism speeds startup and initial autoconfiguration Data containers defined by local and remote MIBs (SNMP is not mandatory) Small number of mandatory TLVs, several optional TLVs are defined Efficient and secure Transmissions contained to individual L2 links (not broadcast) Runs after 802.1X authentication, preventing unauthorized access to VoIP network Highly extensible Easily defined Organization Specific TLVs (e.g. TIA, vendor-specific, etc) Very clear methods to define agreed data formats (local and remote MIB extensions) |