Cisco Systems N3KC3064TFAL3 Configuring LLDP, Configuring Global LLDP Commands, C H A P T E R

C H A P T E R 11

Configuring LLDP

This chapter contains the following sections:

•Configuring Global LLDP Commands, page 127

•Configuring Interface LLDP Commands, page 129

Configuring Global LLDP Commands

You can set global LLDP settings. These settings include the length of time before discarding LLDP information received from peers, the length of time to wait before performing LLDP initialization on any interface, the rate at which LLDP packets are sent, the port desription, system capabilities, system description, and system name.

LLDP supports a set of attributes that it uses to discover neighbor devices. These attributes contain type, length, and value descriptions and are referred to as TLVs. LLDP supported devices can use TLVs to receive and send information to their neighbors. Details such as configuration information, device capabilities, and device identity can be advertised using this protocol.

The switch supports the following required management LLDP TLVs:

•Data Center Ethernet Parameter Exchange (DCBXP) TLV

•Management address TLV

•Port description TLV

•Port VLAN ID TLV ((IEEE 802.1 organizationally specific TLVs)

•System capabilities TLV

•System description TLV

•System name TLV

The Data Center Bridging Exchange Protocol (DCBXP) is an extension of LLDP. It is used to announce, exchange, and negotiate node parameters between peers. DCBXP parameters are packaged into a specific DCBXP TLV. This TLV is designed to provide an acknowledgement to the received LLDP packet.

Cisco Nexus 3000 NX-OS Layer 2 Switching Configuration Guide, Release 5.0(3)U3(1)

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