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User’s Manual of SGSD-1022 / SGSD-1022P
SGSW-2840 / SGSW-2840P
84
The page includes the following fields:
Object Description
• 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. 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.
• TLV Type
Configures the information included in the TLV field of advertised messages.
-Port Description – The port description is taken from the ifDescr object in RFC
2863, which includes information about the manufacturer, the product name, and
the version of the interface hardware/software.
-System Description – The system description is taken from the sysDescr
object in RFC 3418, which includes the full name and version identification of the
system's hardware type, software operating system, and networking software.
-Management Address – The management address protocol packet includes
the IPv4 address of the switch. If no management address is available, the
address should be the MAC address for the CPU or for the port sending this
advertisement. The management address TLV may also include information
about the specific interface associated with this address, and an object identifier
indicating the type of hardware component or protocol entity associated with this
address. The interface number and OID are included to assist SNMP
applications in the performance of network discovery by indicating enterprise
specific or other starting points for the search, such as the Interface or Entity