Brocade Communications Systems FastIron Administration Manual page 185

Ethernet switch
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NOTE
When a port is configured to both receive and transmit LLDP packets and the MED capabilities TLV is
enabled, LLDP-MED is enabled as well. LLDP-MED is not enabled if the operating mode is set to
receive only or transmit only.
Enabling and disabling receive only mode
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. 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.
device(config)#no lldp enable transmit ports e 2/4 e 2/5 e 2/6
The above command changes the LLDP operating mode on ports 2/4, 2/5, and 2/6 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.
device(config)#no lldp enable transmit ports e 2/7 e 2/8 e 2/9
device(config)#lldp enable receive ports e 2/7 e 2/8 e 2/9
The above commands change the LLDP operating mode on ports 2/7, 2/8, and 2/9, from transmit only
to receive only. Note that if you do not disable the transmit only mode, you will configure the port to both
transmit and receive LLDP packets.
NOTE
LLDP-MED is not enabled when you enable the receive only operating mode. To enable LLDP-MED,
you must configure the port to both receive and transmit LLDP packets. Refer to
operating
Syntax:[no] lldp enable receive ports ethernet port-list | all
Use the [no] form of the command to disable the receive only mode.
Enabling and Disabling Transmit Only Mode
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. To change the LLDP operating mode to transmit only mode,
simply disable the receive mode. Enter a command such as the following at the Global CONFIG level of
the CLI.
device(config)#no lldp enable receive ports e 2/4 e 2/5 e 2/6
The above command changes the LLDP operating mode on ports 2/4, 2/5, and 2/6 from transmit and
receive mode to transmit only mode. Any incoming LLDP packets will be dropped in software.
To change a port LLDP operating mode from receive only to transmit only, first disable the receive only
mode, then enable the transmit only mode. For example, enter commands such as the following at the
Global CONFIG level of the CLI.
device(config)#no lldp enable receive ports e 2/7 e 2/8
device(config)#lldp enable transmit ports e 2/7 e 2/8
FastIron Ethernet Switch Administration Guide
53-1003625-01
mode.
LLDP and LLDP-MED
Changing a port LLDP
185

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