Overview; Background; Lldp Configuration; Basic Concepts - H3C S3100 Series Operation Manual

H3c s3100 series ethernet switches operation manual

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Table of Contents

When configuring LLDP, go to these sections for information you are interested in:

Overview

LLDP Configuration Task List

Performing Basic LLDP Configuration

Configuring CDP Compatibility

Configuring LLDP Trapping

Displaying and Maintaining LLDP

LLDP Configuration Examples

In a heterogeneous network, it is important that different types of network devices from different vendors

can discover one other and exchange configuration for interoperability and management sake. This

calls for a standard configuration exchange platform.

To address the needs, the IETF drafted the Link Layer Discovery Protocol (LLDP) in IEEE 802.1AB. The

protocol operates on the data link layer to exchange device information between directly connected

devices. With LLDP, a device sends local device information (including its major functions,

management IP address, device ID, and port ID) as TLV (type, length, and value) triplets in LLDPDUs to

the directly connected devices, and at the same time, stores the device information received in

LLDPDUs sent from the LLDP neighbors in a standard management information base (MIB). It allows a

network management system to fast detect Layer-2 network topology change and identify what the

For more information about MIBs, refer to SNMP-RMON Operation in this manual.

LLDP sends device information in LLDP data units (LLDPDUs). LLDPDUs are encapsulated in Ethernet

II or SNAP frames.

Ethernet II-encapsulated LLDP frame format

Table of Contents