Cisco Systems ME 3400 Configuring LLDP and LLDP-MED

CHAPT ER

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Cisco ME 3400 Ethernet Access Switch Software Configuration Guide

OL-9639-06

Configuring LLDP and LLDP-MED

This chapter describes how to configure the Link Layer Discovery Protocol (LLDP) and LLDP Media

Endpoint Discovery (LLDP-MED) on the Cisco ME 3400 switch.

Note For complete syntax and usage information for the commands used in this chapter, see the command

reference for this release and the “System Management Commands” section in the Cisco IOS

Configuration Fundamentals Command Reference, Release 12.2.

This chapter consists of these sections:

• Understanding LLDP and LLDP-MED, page 24-1

• Configuring LLDP and LLDP-MED, page 24-3

• Monitoring and Maintaining LLDP and LLDP-MED, page 24-7

This section contains this conceptual information:

• Understanding LLDP, page 24-1

• Understanding LLDP-MED, page 24-2

The Cisco Discovery Protocol (CDP) is a device discovery protocol that runs over Layer 2 (the data link

layer) on all Cisco-manufactured devices (routers, bridges, access servers, and switches). CDP allows

network management applications to automatically discover and learn about other Cisco devices

connected to the network.

To support non-Cisco devices and to allow for interoperability between other devices, the switch

supports the IEEE 802.1AB Link Layer Discovery Protocol (LLDP). LLDP is a neighbor discovery

protocol that is used for network devices to advertise information about themselves to other devices on

the network. This protocol runs over the data-link layer, which allows two systems running different

network layer protocols to learn about each other.