Accton Technology ES3528M-SFP manual 182

3 Configuring the Switch

Command Attributes

•LLDP – Enables LLDP globally on the switch. (Default: Enabled)

•Transmission Interval – Configures the periodic transmit interval for LLDP advertisements. (Range: 5-32768 seconds; Default: 30 seconds)

This attribute must comply with the following rule: (transmission-interval * holdtime-multiplier) ≤ 65536

•Hold Time Multiplier – Configures the time-to-live (TTL) value sent in LLDP advertisements as shown in the formula below. (Range: 2-10; Default: 4)

The time-to-live tells the receiving LLDP agent how long to retain all information pertaining to the sending LLDP agent if it does not transmit updates in a timely manner. TTL in seconds is based on (refresh-interval * holdtime-multiplier) ≤ 65536

Therefore, the default TTL is 4*30 = 120 seconds.

•Delay Interval – Configures a delay between the successive transmission of advertisements initiated by a change in local LLDP MIB variables.

(Range: 1-8192 seconds; Default: 2 seconds)

The transmit delay is used to prevent a series of successive LLDP transmissions during a short period of rapid changes in local LLDP MIB objects, and to increase the probability that multiple, rather than single changes, are reported in each transmission.

This attribute must comply with the rule: (4 * delay-interval) ≤ transmission-interval

•Reinitialization Delay – Configures the delay before attempting to re-initialize after LLDP ports are disabled or the link goes down. (Range: 1-10 seconds; Default: 2 seconds)

When LLDP is re-initialized on a port, all information in the remote systems LLDP MIB associated with this port is deleted.

•Notification Interval – Configures the allowed interval for sending SNMP notifications about LLDP MIB changes. (Range: 5-3600 seconds; Default: 5 seconds)

This parameter only applies to SNMP applications which use data stored in the LLDP MIB for network monitoring or management.

Information about changes in LLDP neighbors that occur between SNMP notifications is not transmitted. Only state changes that exist at the time of a notification are included in the transmission. An SNMP agent should therefore periodically check the value of lldpStatsRemTableLastChangeTime to detect any lldpRemTablesChange notification-events missed due to throttling or transmission loss.

•MED Fast Start Count – Configures the amount of LLDP MED Fast Start LLDPDUs to transmit during the activation process of the LLDP-MED Fast Start mechanisim. (Range: 1-10 packets; Default: 4 packets)

The MED Fast Start Count parameter is part of the timer which ensures that the LLDP-MED Fast Start mechanism is active for the port. LLDP-MED Fast Start is

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