H3C Technologies H3C WX5500E Series Access Controllers - Manual (Page 189)

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By default, management addresses are encoded in numeric format. If a neighbor encodes its
management address in character string format, you must configure the encoding format of the
management address as string on the connecting port to guarantee normal communication with the
neighbor.
To configure a management address to be advertised and its encoding format on a port or group of
ports:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter Ethernet interface view
or port group view.
• Enter Layer 2 Ethernet interface
view:
interface interface-type
interface-number
• Enter port group view:
port-group manual
port-group-name
Use either command.
3. Allow LLDP to advertise the
management address in
LLDPDUs and configure the
advertised management
address.
lldp management-address-tlv
[ ip-address ]
Optional.
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 lowest-ID VLAN
carried on the port. If none of the
carried VLANs is assigned an IP
address, no management address
will be advertised.
4. Configure the encoding
format of the management
address as a character string.
lldp management-address-format
string
Optional.
By default, the management
address is encapsulated in numeric
format.
Setting other LLDP parameters
The Time to Live TLV carried in an LLDPDU determines how long 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 calculated by
using the following formula:
TTL = Min (65535, (TTL multiplier × LLDPDU transmit interval))
As the expression shows, the TTL can be up to 65,535 seconds. TTLs greater than 65,535 will be
rounded down to 65,535 seconds.
Configuration restrictions and guidelines
• To make sure that LLDP neighbors can receive LLDPDUs to update information about the current
device before it ages out, configure both the LLDPDU transmit delay to be less than the TTL.
• It is a good practice to set the LLDPDU transmit interval to be no less than four times the LLDPDU
transmit delay.