234
As the expression shows, the TTL can be up to 65535 seconds. TTLs greater than 65535 will be rounded
down to 65535 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 interval and 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.
•
If the LLDPDU transmit delay is greater than the LLDPDU transmit interval, the device uses the
LLDPDUs transmit delay as the transmit interval.
Configuration procedure
To change the TTL multiplier:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Set the TTL multiplier.
lldp hold-multiplier
value
Optional.
4 by default.
3.
Set the LLDPDU transmit
interval.
lldp timer tx-interval
interval
Optional.
30 seconds by default.
4.
Set the LLDPDU transmit delay.
lldp timer tx-delay
delay
Optional.
2 seconds by default.
5.
Set the number of LLDPDUs
sent each time fast LLDPDU
transmission is triggered.
lldp fast-count
count
Optional.
3 by default.
Setting an encapsulation format for LLDPDUs
LLDPDUs can be encapsulated in the following formats: Ethernet II or SNAP frames.
•
With Ethernet II encapsulation configured, an LLDP port sends LLDPDUs in Ethernet II frames and
processes only incoming, Ethernet II encapsulated LLDPDUs.
•
With SNAP encapsulation configured, an LLDP port sends LLDPDUs in SNAP frames and processes
only incoming, SNAP encapsulated LLDPDUs.
By default, Ethernet II frames encapsulate LLDPDUs. If the neighbor devices encapsulate LLDPDUs in
SNAP frames, configure the encapsulation format for LLDPDUs as SNAP to guarantee normal
communication with the neighbors.
To set the encapsulation format for LLDPDUs to SNAP:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
