Setting An Encapsulation Format For Lldp Frames - HP 3100 Series Configuration Manual

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 × LLDP frame transmission interval))
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 LLDP frames to update information about the
current device before it ages out, configure both the LLDP frame transmission interval and
delay to be less than the TTL.
•
It is a good practice to set the LLDP frame transmission interval to be no less than four times the
LLDP frame transmission delay.
•
If the LLDP frame transmission delay is greater than the LLDP frame transmission interval, the
device uses the LLDP frames transmission delay as the transmission interval.
Configuration procedure
To change the TTL multiplier:
Step
Enter system view.
1.
Set the TTL multiplier.
2.
Set the LLDP frame
3.
transmission interval.
Set the LLDP frame
4.
transmission delay.
Set the number of LLDP
5.
frames sent each time fast
LLDP frame transmission is
triggered.

Setting an encapsulation format for LLDP frames

LLDP frames can be encapsulated in the following formats:
•
Ethernet II—With Ethernet II encapsulation configured, an LLDP port sends LLDP frames in
Ethernet II frames and processes only incoming, Ethernet II encapsulated LLDP frames.
•
SNAP—With SNAP encapsulation configured, an LLDP port sends LLDP frames in SNAP
frames and processes only incoming, SNAP encapsulated LLDP frames.
By default, Ethernet II frames encapsulate LLDP frames. If the neighbor devices encapsulate LLDP
frames in SNAP frames, configure the encapsulation format for LLDP frames as SNAP to guarantee
normal communication with the neighbors.
To set the encapsulation format for LLDP frames to SNAP:
Step
Enter system view.
1.
Command
system-view
lldp hold-multiplier value
lldp timer tx-interval interval
lldp timer tx-delay delay
lldp fast-count count
Command
system-view
184
Remarks
N/A
Optional.
4 by default.
Optional.
30 seconds by default.
Optional.
2 seconds by default.
Optional.
3 by default.
Remarks
N/A