System information

13-28

Configuring for Network Management Applications

LLDP (Link-Layer Discovery Protocol)

To standardize device discovery on all ProCurve switches, LLDP has been

implemented while offering limited read-only support for CDP as

documented in this manual. For current information on your switch model,

consult the latest Release Notes (available on the ProCurve Networking web

site). If LLDP has not yet been implemented (or if you are running an older

version of software), consult a previous version of the Management and

Configuration Guide for device discovery details.

Introduction

LLDP Features

The Link Layer Discovery Protocol (LLDP) provides a standards-based

method for enabling switches to advertise themselves to adjacent devices and

to learn about adjacent LLDP devices.

An SNMP utility can progressively discover LLDP devices in a network by:

1. Reading a given device’s Neighbors table (in the Management Information

Base, or MIB) to learn about other, neighboring LLDP devices.

2. Using the information learned in step 1 to find and read the neighbor

devices’ Neighbors tables to learn about additional devices, and so on.

Feature Default Menu CLI Web

View the switch’s LLDP configuration n/a — page 13-35 —

Enable or disable LLDP on the switch Enabled — page 13-37 —

Change the transmit interval (refresh-interval) for

LLDP packets

30 seconds — page 13-38 —

Change the holdtime multiplier for LLDP Packets

(holdtime-multiplier x refresh-interval = time-to-live)

4 seconds — page 13-38 —

Change the delay interval between advertisements 2 seconds — page 13-39 —

Changing the reinitialization delay interval 2 seconds — page 13-40 —

Configuring SNMP notification support Disabled — page 13-40 —

Configuring transmit and receive modes tx_rx — page 13-42 —

Configuring per-port advertisement content Enabled — page 13-42 —

Displaying Advertisement Data and Statistics n/a — page 13-44 —