Changing The Holdtime Multiplier For Transmit Ttl; Changing The Minimum Time Between Port Reinitializations - Dell PowerConnect B-RX Configuration Manual

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 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.
FastIron(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 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.
FastIron(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.
BigIron RX Series Configuration Guide
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Configuring LLDP
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