User's Manual

291
19. Location Identification
20. Extended Power-via-MDI
21. Inventory
（包含
Hardware Revision
、
Firmware Revision
、
Software Revision
、
Serial
Number
、
Manufacturer Name
、
Mode Name
、
Assert ID
）
(3) The end TLV should be the last one in LLDP PDU.
40.3 LLDP Configuration Task List
 Disabling/enabling LLDP
 Configuring holdtime
 Configuring Timer
 Configuring Reinit
 Configuring the To-Be-Sent TLV
 Configuring the Transmission or Reception Mode
 Specifying the Management IP Address of a Port
 Sending Trap Notification to mib Database
 Configuring Show-Relative Commands
 Configuring the Deletion Commands
40.4 LLDP Configuration Tasks
40.4.1 Disabling/enabling LLDP
LLDP is disabled by default. You need to start up LLDP before it runs. After enabling LLDP, the local port
regularly forwards lldp frame to notify the information of the opposite local port.
Run the following commands in global configuration mode to enable LLDP:
Procedure Command Purpose
Step 1 config Enters the global configuration mode.
Step 2 lldp run Runs LLDP.
Run the following command to disable LLDP:
Procedure Command Purpose
Step 1 config Enters the global configuration mode.
Step 2 no lldp run Disables LLDP.
Caution: Only lldp function is enabled can the system process lldp packets. Otherwise, lldp frame will be
directly forwarded.
40.4.2 Configuring holdtime
In normal condition, the remote information stored in MIB will update before aging. But the frame may loss
in sending and causes the information ages. For avoiding this, you need to set the value of TTL and ensure
the update LLDP frame is forwarded time after time. You can control the timeout time of transmitting the LLDP
message through modifying holdtime:
Run the following commands in global configuration mode to configure holdtime of LLDP: