R21xx-HP FlexFabric 11900 Layer 2 LAN Switching Configuration Guide

145
Step Command Remarks
3. Allow LLDP to advertise the
management address in
LLDPDUs and configure the
advertised management
address.
lldp tlv-enable basic-tlv
management-address-tlv [ ip-address ]
By default, the
management address is
sent through LLDPDUs.
For a Layer 2 Ethernet
port, the management
address is the main IP
address of the VLAN
interface that is in up
state and whose
corresponding VLAN ID
is the lowest among the
VLANs permitted on the
port. If none of the
VLAN interfaces of the
permitted VLANs is
assigned an IP address
or all VLAN interfaces
are down, no
management address
will be advertised.
For a Layer 3 Ethernet
port, the management
address is its own IP
address. If no IP address
is configured for the
Layer 3 Ethernet port, no
management address
will be advertised.
4. Configure the encoding
format of the management
address as character string.
lldp management-address-format string
By default, the
management address is
encapsulated in the
numeric format.
Setting other LLDP parameters
The TTL TLV carried in an LLDPDU determines how long the device information carried in the LLDPDU can
be saved on a recipient device.
By setting the TTL multiplier, you can configure the TTL of locally sent LLDPDUs, which determines how
long information about the local device can be saved on a neighboring device. The TTL is expressed by
using the following formula:
TTL = Min (65535, (TTL multiplier × LLDPDU transmit interval))
As the expression shows, the TTL can be up to 65535 seconds. TTLs greater than 65535 will be rounded
down to 65535 seconds.
Follow these guidelines when you change LLDP parameters:
• To make sure that LLDP neighbors can receive LLDPDUs to update information about the current
device before it ages out, configure the LLDPDU transmit delay to be less than the TTL.
• Set the LLDPDU transmit interval to be no less than four times the LLDPDU transmit delay.