Quick Reference Guide

PowerConnect B-Series TI24X Configuration Guide 545
53-1002269-02
Configuring LLDP
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Enabling and disabling LLDP
LLDP is enabled by default on individual ports. However, to run LLDP, you must first enable it on a
global basis (on the entire device).
To enable LLDP globally, enter the following command at the global CONFIG level of the CLI.
PowerConnect(config)#lldp run
Syntax: [no] lldp run
Changing a port LLDP operating mode
LLDP packets are not exchanged until LLDP is enabled on a global basis. When LLDP is enabled on
a global basis, by default, each port on the Dell device will be capable of transmitting and receiving
LLDP packets. You can disable a port’s ability to transmit and receive LLDP packets, or change the
operating mode to one of the following:
• Transmit LLDP information only
• Receive LLDP information only
You can configure a different operating mode for each port on the device. For example, you could
disable the receipt and transmission of LLDP packets on port e 1, configure port e 3 to only receive
LLDP packets, and configure port e 5 to only transmit LLDP packets.
The following sections show how to change the operating mode.
Enabling and disabling receive and transmit mode
To disable the receipt and transmission of LLDP packets on individual ports, enter a command
such as the following at the Global CONFIG level of the CLI.
PowerConnect(config)#no lldp enable ports e 4 e 5
The above command disables LLDP on ports 4 and 5. These ports will not transmit nor receive
LLDP packets.
To enable LLDP on a port after it has been disabled, enter the following command.
PowerConnect(config)#lldp enable ports e 4
Syntax: [no] lldp enable ports ethernet <port-list> | all
Use the [no] form of the command to disable the receipt and transmission of LLDP packets on a
port.
Enabling and disabling receive only mode
When LLDP is enabled on a global basis, by default, each port on the device will be capable of
transmitting and receiving LLDP packets. To change the LLDP operating mode from receive and
transmit mode to receive only mode, simply disable the transmit mode. Enter a command such as
the following at the Global CONFIG level of the CLI.
PowerConnect(config)#no lldp enable transmit ports e 4 e 5 e 6
The above command changes the LLDP operating mode on ports 4, 5, and 6 from transmit and
receive mode to receive only mode.
To change a port LLDP operating mode from transmit only to receive only, first disable the transmit
only mode, then enable the receive only mode. Enter commands such as the following.