TP-Link T1600G-18TS Configuration Manual page 653

Configuring LLDP
Follow these steps to enable LLDP and configure the LLDP feature globally.
1) In the Global Config section, enable LLDP. You can also enable the switch to forward
LLDP messages when LLDP function is disabled. Click Apply.
LLDP
LLDP Forward
Message
3) In the Parameters Config section, configure the LLDP parameters. Click Apply.
Transmit
Interval
Hold Multiplier
Transmit Delay
Reinit Delay
Notification
Interval
Fast Start Times
Enable or disable LLDP function globally.
Enable or disable the switch to forward LLDP messages when LLDP function is
disabled.
Enter the interval between successive LLDP packets that are periodically sent
from the local device to its neighbors. The default is 30 seconds.
Specify the amount of time the neighbor device should hold the received
information before discarding it. The default is 4.
TTL (Time to Live) = Hold Multiplier * Transmit Interval.
Specify the amount of time that the local device waits before sending another
LLDP packet to its neighbors. When the local information changes, the local
device will send LLDP packets to inform its neighbors. If frequent changes occur
to the local device, LLDP packets will flood. After specifying a transmit delay time,
the local device will wait for a delay time to send LLDP packets when changes
occur to avoid frequent LLDP packet forwarding. The default is 2 seconds.
Specify the delay time that the local port waits before changing its Admin Status.
When a local port's Admin Status changes, the local device will send Trap
messages. After specifying a reinit delay time, the local device will wait for a delay
time to send Trap messages to avoid frequent Trap forwarding. The default is 2
seconds.
Enter the interval between successive Trap messages that are periodically sent
from the local device to the NMS. The default is 5 seconds.
Specify the number of LLDP packets that the local port sends when its Admin
Status changes from Disable (or Rx_Only) to Tx&RX (or Tx_Only). The default is 3.
In this case, the local device will shorten the Transmit Interval of LLDP packets
to 1 second to make it quickly discovered by its neighbors. After the specified
number of LLDP packets are sent, the Transmit Interval will be restored to the
specified value.
LLDP Configurations
Configuration Guide 630