Brocade FastIron Ethernet Switch Administration Guide - Manual (Page 180)

To change the LLDP transmission interval, enter a command such as the following at the Global
CONFIG level of the CLI.
device(config)#lldp transmit-interval 40
The above command causes the LLDP agent to transmit LLDP frames every 40 seconds.
Syntax:[no] lldp transmit-interval seconds
where seconds is a value from 5 to 32768. The default is 30 seconds.
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 holdtime multiplier for transmit TTL
The holdtime multiplier for transmit TTL is used to compute the actual time-to-live (TTL) value used in
an LLDP frame. The TTL value is the length of time the receiving device should maintain the
information in its MIB. When you enable LLDP, the device automatically sets the holdtime multiplier for
TTL to four. If desired, you can change the default behavior from four to a value between two and ten.
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.
device(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.
device(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.
Changing the holdtime multiplier for transmit TTL
180 FastIron Ethernet Switch Administration Guide
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