Terminology for LAD

Terms

Term	Definition
LAD	A Huawei proprietary protocol that discovers neighbors at the link layer. LAD allows a device to issue link discovery requests as triggered by the NMS or command lines. After the device receives link discovery replies, the device generates neighbor information and saves it in the local MIB. The NMS can then query neighbor information in the MIB and generate the topology of the entire network.
LLDP	A Layer 2 discovery protocol defined in IEEE 802.1ab. LLDP provides a standard link-layer discovery mode to encapsulate information about the capabilities, management address, device ID, and interface ID of a local device into LLDP packets and send the packets to neighbors. The neighbors save the information received in a standard MIB to help the NMS query and determine the communication status of links.

Term

Definition

LAD

A Huawei proprietary protocol that discovers neighbors at the link layer. LAD allows a device to issue link discovery requests as triggered by the NMS or command lines. After the device receives link discovery replies, the device generates neighbor information and saves it in the local MIB. The NMS can then query neighbor information in the MIB and generate the topology of the entire network.

LLDP

A Layer 2 discovery protocol defined in IEEE 802.1ab. LLDP provides a standard link-layer discovery mode to encapsulate information about the capabilities, management address, device ID, and interface ID of a local device into LLDP packets and send the packets to neighbors. The neighbors save the information received in a standard MIB to help the NMS query and determine the communication status of links.

Acronyms and Abbreviations

Acronym & Abbreviation	Full Name
LAD	Link Automatic Discovery
LLDP	Link Layer Discovery Protocol
MIB	management information base
NMS	network management system
SNMP	Simple Network Management Protocol