Black Box LPB2910A, User Manual

Page: 143 / 367

Publication date: Sept, 2015
Revision A1
131
Parameter description:
LLDP Parameters
 Tx Interval:
The switch periodically transmits LLDP frames to its neighbors to have the network discovery
information up-­‐to-­‐date. The interval between each LLDP frame is determined by the Tx Interval
value. Valid values are restricted to 5–32768 seconds.
 Tx Hold:
Each LLDP frame contains information about how long the information in the LLDP frame will be
considered valid. The LLDP information valid period is set to Tx Hold multiplied by Tx Interval
seconds. Valid values are restricted to 2–10 times.

Tx Delay:
If some configuration is changed (e.g. the IP address) a new LLDP frame is transmitted, but the
time between the LLDP frames will always be at least the value of Tx Delay seconds. Tx Delay
cannot be larger than 1/4 of the Tx Interval value. Valid values are restricted to 1–8192 seconds.

Tx Reinit:
When a port is disabled, LLDP is disabled or the switch is rebooted, an LLDP shutdown frame is
transmitted to the neighboring units, signaling that the LLDP information isn't valid anymore. Tx
Reinit controls the amount of seconds between the shutdown frame and a new LLDP initialization.
Valid values are restricted to 1–10 seconds.
LLDP Port Configuration
The currently selected LLDP port settings are on the page header.

Port:
The switch port number of the logical LLDP port.
 Mode:
Select LLDP mode.
Rx only: The switch will not send out LLDP information, but LLDP information from neighbor units
is analyzed.
Tx only: The switch will drop LLDP information received from neighbors, but will send out LLDP
information.
Disabled: The switch will not send out LLDP information, and will drop LLDP information received
from neighbors.
Enabled: The switch will send out LLDP information, and will analyze LLDP information received
from neighbors.

CDP Aware:
Select CDP awareness.