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Fat AP and Cloud AP V200R008C00 CLI-based Configuration Guide

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
LLDP Overview

LLDP Overview

This section describes the definition and purpose of LLDP.

Definition

The Link Layer Discovery Protocol (LLDP) is a standard Layer 2 topology discovery protocol defined in IEEE 802.1ab. LLDP collects local device information including the management IP address, device ID, and port ID and advertises the information to neighbors. Neighbors save the received information in their management information bases (MIBs). The network management system (NMS) can use data in MIBs to query the link status.

Purpose

An NMS must be capable of managing multiple network devices with diverse functions and complex configurations. Most NMSs can detect Layer 3 network topologies, but they cannot detect detailed Layer 2 topologies or detect configuration conflicts. A standard protocol is required to exchange Layer 2 information between network devices.

The LLDP protocol provides a standard link-layer discovery method. Layer 2 information obtained from LLDP allows the NMS to detect the topology of neighboring devices, and display paths between clients, switches, routers, application servers, and network servers. The NMS can also detect configuration conflicts between network devices and identify causes of network failures. Enterprise users can use an NMS to monitor the link status on devices running LLDP and quickly locate network faults.

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Updated: 2019-01-11

Document ID: EDOC1000176006

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