Chapter 13
| Basic Administration Protocols
Link Layer Discovery Protocol
– 397 –
Figure 241: Configuring LLDP Timing Attributes
Configuring LLDP
Interface Attributes
Use the Administration > LLDP (Configure Interface - Configure General) page to
specify the message attributes for individual interfaces, including whether
messages are transmitted, received, or both transmitted and received, whether
SNMP notifications are sent, and the type of information advertised.
Parameters
These parameters are displayed:
◆ Admin Status – Enables LLDP message transmit and receive modes for LLDP
Protocol Data Units. (Options: Tx only, Rx only, TxRx, Disabled; Default: TxRx)
◆ SNMP Notification – Enables the transmission of SNMP trap notifications
about LLDP and LLDP-MED changes. (Default: Enabled)
This option sends out SNMP trap notifications to designated target stations at
the interval specified by the Notification Interval in the preceding section. Trap
notifications include information about state changes in the LLDP MIB
(IEEE 802.1AB), the LLDP-MED MIB (ANSI/TIA-1057), or vendor-specific LLDP-
EXT-DOT1 and LLDP-EXT-DOT3 MIBs.
For information on defining SNMP trap destinations, see “Specifying
Trap Managers” on page 440.
Information about additional changes in LLDP neighbors that occur between
SNMP notifications is not transmitted. Only state changes that exist at the time
of a trap 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 Notification – Enables the transmission of SNMP trap notifications about
LLDP-MED changes. (Default: Disabled)
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