Brocade TurboIron 24X Series Configuration Guide - Manual (Page 229)

Brocade TurboIron 24X Series Configuration Guide 195
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Configuring LLDP
• By default, the device limits the number of neighbors per port to four, and staggers the
transmission of LLDP packets on different ports, in order to minimize any high-usage spikes to
the CPU.
• Ports that are in blocking mode (spanning tree) can still receive LLDP packets from a
forwarding port.
• Auto-negotiation status indicates what is being advertised by the port for 802.3
auto-negotiation.
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.
TurboIron(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 Brocade 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.
TurboIron(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.
TurboIron(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.