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PowerConnect B-Series FCX Configuration Guide
53-1002266-01
Configuring LLDP
24
Syntax: [no] lldp snmp-notification-interval
<seconds>
where <seconds> is a value between 5 and 3600. The default is 5 seconds.
Changing the minimum time between LLDP transmissions
The LLDP transmit delay timer limits the number of LLDP frames an LLDP agent can send within a
specified time frame. When you enable LLDP, the system automatically sets the LLDP transmit
delay timer to two seconds. If desired, you can change the default behavior from two seconds to a
value between 1 and 8192 seconds.
NOTE
The LLDP transmit delay timer must not be greater than one quarter of the LLDP transmission
interval (CLI command lldp transmit-interval).
The LLDP transmit delay timer prevents an LLDP agent from transmitting a series of successive
LLDP frames during a short time period, when rapid changes occur in LLDP. It also increases the
probability that multiple changes, rather than single changes, will be reported in each LLDP frame.
To change the LLDP transmit delay timer, enter a command such as the following at the Global
CONFIG level of the CLI.
PowerConnect(config)#lldp transmit-delay 7
The above command causes the LLDP agent to wait a minimum of seven seconds after
transmitting an LLDP frame and before sending another LLDP frame.
Syntax: [no] lldp transmit-delay
<seconds>
where <seconds> is a value between 1 and 8192. The default is two seconds. Note that this value
must not be greater than one quarter of the LLDP transmission interval (CLI command lldp
transmit-interval).
Changing the interval between regular LLDP transmissions
The LLDP transmit interval specifies the number of seconds between regular LLDP packet
transmissions. When you enable LLDP, by default, the device will wait 30 seconds between regular
LLDP packet transmissions. If desired, you can change the default behavior from 30 seconds to a
value between 5 and 32768 seconds.
To change the LLDP transmission interval, enter a command such as the following at the Global
CONFIG level of the CLI.
PowerConnect(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.
Summary of Contents for PowerConnect B-FCXs
Page 1: ...53 1002266 01 18 March 2011 PowerConnect B Series FCX Configuration Guide ...
Page 248: ...206 PowerConnect B Series FCX Configuration Guide 53 1002266 01 IPv6 management commands 7 ...
Page 374: ...332 PowerConnect B Series FCX Configuration Guide 53 1002266 01 Jumbo frame support 9 ...
Page 568: ...526 PowerConnect B Series FCX Configuration Guide 53 1002266 01 CLI examples 14 ...
Page 588: ...546 PowerConnect B Series FCX Configuration Guide 53 1002266 01 Sample application 15 ...
Page 684: ...642 PowerConnect B Series FCX Configuration Guide 53 1002266 01 VLAN based mirroring 20 ...
Page 724: ...682 PowerConnect B Series FCX Configuration Guide 53 1002266 01 Reading CDP packets 23 ...
Page 930: ...888 PowerConnect B Series FCX Configuration Guide 53 1002266 01 26 ...
Page 948: ...906 PowerConnect B Series FCX Configuration Guide 53 1002266 01 Configuring MLD snooping 27 ...
Page 1348: ...1306 PowerConnect B Series FCX Configuration Guide 53 1002266 01 Example configurations 36 ...
Page 1406: ...1364 PowerConnect B Series FCX Configuration Guide 53 1002266 01 IP source guard 39 ...