Setting Other Lldp Parameters; Setting An Encapsulation Format For Lldpdus - HP 3600 v2 series Configuration Manual

Setting other LLDP parameters

The Time to Live 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 steps to change the TTL multiplier:
To do...
Enter system view
Set the TTL multiplier
Set the LLDPDU transmit interval
Set the LLDPDU transmit delay
Set the number of LLDPDUs sent
each time fast LLDPDU transmission
is triggered
NOTE:
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.

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.
Follow these steps to set the encapsulation format for LLDPDUs to SNAP:
Use the command...
system-view
lldp hold-multiplier value
lldp timer tx-interval interval
lldp timer tx-delay delay
lldp fast-count count
224
Remarks
—
Optional
4 by default.
Optional
30 seconds by default.
Optional
2 seconds by default.
Optional
3 by default.