Configuration Guide User guide
FastIron Configuration Guide 465
53-1002494-02
LLDP configuration
To compute the TTL value, the system multiplies the LLDP transmit interval by the holdtime
multiplier. For example, if the LLDP transmit interval is 30 and the holdtime multiplier for TTL is 4,
then the value 120 is encoded in the TTL field in the LLDP header.
To change the holdtime multiplier, enter a command such as the following at the Global CONFIG
level of the CLI.
Brocade(config)#lldp transmit-hold 6
Syntax: [no] lldp transmit-hold <value>
where <value> is a number from 2 to 10. The default value is 4.
NOTE
Setting the transmit interval or transmit holdtime multiplier, or both, to inappropriate values can
cause the LLDP agent to transmit LLDPDUs with TTL values that are excessively high. This in turn
can affect how long a receiving device will retain the information if it is not refreshed.
Changing the minimum time between port reinitializations
The LLDP re-initialization delay timer specifies the minimum number of seconds the device will wait
from when LLDP is disabled on a port, until it will honor a request to re-enable LLDP on that port.
When you enable LLDP, the system sets the re-initialization delay timer to two seconds. If desired,
you can change the default behavior from two seconds to a value between one and ten seconds.
To set the re-initialization delay timer, enter a command such as the following at the Global CONFIG
level of the CLI.
Brocade(config)#lldp reinit-delay 5
The above command causes the device to wait five seconds after LLDP is disabled, before
attempting to honor a request to re-enable it.
Syntax: [no] lldp reinit-delay <seconds>
where <seconds> is a value from 1 – 10. The default is two seconds.
LLDP TLVs advertised by the Brocade device
When LLDP is enabled on a global basis, the Brocade device will automatically advertise the
following information, except for the features noted:
General system information:
• Management address
• Port description
• System capabilities
• System description (not automatically advertised)
• System name
802.1 capabilities:
• VLAN name (not automatically advertised)
• Untagged VLAN ID
802.3 capabilities: