H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 139)

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LLDP configuration
This chapter includes these sections:
• Overview
• LLDP configuration task list
• Displaying and maintaining LLDP
• LLDP configuration examples
NOTE:
•
The term "switch" or "device" in this chapter refers to the switching engine on a WX3000E wireless
switch.
• The WX3000E series comprises WX3024E and WX3010E wireless switches.
• The port numbers in this chapter are for illustration only.
Overview
Background
In a heterogeneous network, it is important that different types of network devices from different vendors
can discover one another and exchange configuration for interoperability and management sake. A
standard configuration exchange platform was created.
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 LLDP Data Units (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 quickly detect and identify Layer 2 network topology changes.
NOTE:
For more information about MIBs, see the Network Management and Monitoring Configuration Guide.
Basic concepts
LLDPDUs
LLDP sends device information in LLDPDUs. LLDPDUs are encapsulated in Ethernet II or Subnetwork
Access Protocol (SNAP) frames.
1. Ethernet II-encapsulated LLDPDU format