Configuring LLDP

LLDP Overview

The Link Layer Discovery Protocol (LLDP) operates on the data link layer. With LLDP, a device can store and maintain information about itself and the directly-connected neighbor devices for network administrators to check link status.

LLDP Operating Mode

LLDP can operate in one of the following modes:

z

z

z

z

TxRx: A port in this mode sends and receives LLDPDUs.

Tx: A port in this mode only sends LLDPDUs.

Rx: A port in this mode only receives LLDPDUs.

Disable: A port in this mode does not send or receive LLDPDUs.

TLV Types

TLVs encapsulated in LLDPDUs fall into these categories: basic TLVs, organizationally specific TLVs, and media endpoint discovery (MED) related TLVs.

Basic TLVs are the base of network device management. Organizationally specific TLVs are defined by the standard organization, while MED related TLVs are vendor specific for enhanced device management and are optional to LLDPDUs.

Configuring Global LLDP Parameters

Click Device > LLDP > Global Setup. The Global LLDP Parameters Page opens.

Figure 3-69Global LLDP Parameters Page

The Global LLDP Parameters Page contains the following fields:

Table 3-54Global LLDP Parameter Page item description

 

Item

 

Description

 

 

Enable/disable LACP globally. Two options are available:

LLDP

 

z Enabled: Enables LLDP globally.

 

z

Disabled: Disables LLDP globally.

 

 

 

 

By default, LLDP is disabled globally.

 

 

 

 

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3Com 3CBLSF26H manual Configuring Lldp, Lldp Overview, Configuring Global Lldp Parameters, Lldp Operating Mode, TLV Types