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Enterasys Support for the LLDP and LLDP-MED Protocols

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Article ID: 7573



Enterasys Support for the LLDP and LLDP-MED Protocols

802.1ab is an IEEE (Institute of Electrical and Electronics Engineers) standard for link layer discovery in Ethernet networks, providing a method for switches, routers, and access points to advertise their identification, configuration, and capabilities to neighboring devices that store the data in a MIB (management information base). Link layer discovery utilizing LLDP (Link Layer Discovery Protocol) allows a network management system to model the topology of the network by interrogating the MIB databases in the devices.

ANSI/TIA-1057 is a TIA (Telecommunications Industry Association) standard, also known as LLDP-MED (Link Layer Discovery Protocol-Media Endpoint Discover), representing an enhancement to LLDP designed to allow for things such as:
  • Auto-discovery of LAN policies (such as VLAN, Layer 2 Priority and Diffserv settings) leading to "plug and play" networking
  • Device location discovery to allow creation of location databases and, in the case of VoIP, E911 services
  • Extended and automated power management of Power over Ethernet endpoints
  • Inventory management, allowing network administrators to track their network devices, and determine their characteristics (manufacturer, software and hardware versions, serial / asset number)
These protocols are similar in concept to CDP, but are more fully featured.

Support for the LLDP and LLDP-MED protocols is provided in:
  • S-Series all firmware
  • Matrix N-Series DFE firmware 5.41.25 and higher
  • K-Series all firmware
  • G-Series all firmware
  • D-Series all firmware
  • C5-Series all firmware
  • C3-Series firmware and higher
  • C2-Series firmware and higher
  • B5-Series all firmware
  • B3-Series firmware and higher
  • B2-Series firmware and higher
  • A4-Series firmware and higher

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