Preventing An Interface From Receiving Lldp Messages; Altering Lldp Timers - HP 7102dl - ProCurve Secure Router Configuration Manual

Link Layer Discovery Protocol
Configuring LLDP
N o t e
14-14

Preventing an Interface from Receiving LLDP Messages

You can prevent an interface from listening for LLDP messages by moving to
its configuration mode context and entering:
Syntax: no lldp receive
You cannot filter out certain types of information. The interface either receives
all LLDP messages or none.
Preventing an interface from receiving LLDP messages does not stop it from
sending them. You prevent an interface from participating in LLDP entirely
with this command, entered from the interface configuration mode context:
Syntax: no lldp send-and-receive

Altering LLDP Timers

LLDP can be chatty; you can increase the intervals at which interfaces transmit
messages to reduce network congestion.
The transmit interval determines how often an interface sends out LLDP
messages during normal operations. However, the interface can send mes-
sages more often—for example, when its status changes. A flapping interface,
which toggles between up and down, may send messages out again and again.
If LLDP messages are causing too much overhead, you can force the interface
to wait a set amount of time before transmitting a new message by raising the
minimum transmit interval.
An LLDP header includes a TTL field that informs neighboring devices how
long they should store the information in the message. The interface sets the
TTL field by multiplying the transmit interval by the TTL multiplier. By default,
this multiplier is four. That is, information is assumed to be accurate for four
LLDP cycles.
You configure LLDP intervals for all interfaces from the global configuration
mode context. Refer to Table 14-2 for the exact command syntax.