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z To enable MED related LLDP TLV sending, you need to enable LLDP-MED capabilities TLV
sending first. Conversely, to disable LLDP-MED capabilities TLV sending, you need to disable the
sending of other MED related LLDP TLVs.
z To disable MAC/PHY configuration/status TLV sending, you need to disable LLDP-MED
capabilities TLV sending first.
z When executing the lldp tlv-enable command, specifying the all keyword for basic LLDP TLVs
and organization defined LLDP TLVs (including IEEE 802.1 defined LLDP TLVs and IEEE 802.3
defined LLDP TLVs) enables sending of all the corresponding LLDP TLVs. For MED related LLDP
TLVs, the all keyword enables sending of all the MED related LLDP TLVs except location
identification TLVs.
z Enabling sending of LLDP-MED capabilities TLVs also enables sending of MAC/PHY
configuration/status TLVs.
Enable LLDP Polling
With LLDP polling enabled, a device checks for the local configuration changes periodically. Upon
detecting a configuration change, the device sends LLDPDUs to inform the neighboring devices of the
change.
Follow these steps to enable LLDP polling:
To do… Use the command… Remarks
Enter system view
system-view
—
Enter
Ethernet
interface view
interface interface-type
interface-number
Enter Ethernet
interface
view/port
group view
Enter port
group view
port-group manual
port-group-name
Either of the two is required.
Configuration performed in Ethernet
interface view applies to the current
port only; configuration performed in
port group view applies to all the ports
in the corresponding port group.
Enable LLDP polling and set
the polling interval
lldp
check-change-interval
value
Required
Disabled by default
Configuring the Parameters Concerning LLDPDU Sending
Configuring time-related parameters
Follow these steps to set time-related parameters:
To do… Use the command… Remarks
Enter system view
System-view
—
Set the interval to send
LLDPDUs
lldp timer tx-interval value
Optional
30 seconds by default
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