HP T9576G06, Management Manual

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Glossary
SNMP Configuration and Management Manual — 424777-006
Glossary -16
trap
trap. An unsolicited PDU sent asynchronously by an SNMP agent to an SNMP manager
station to signal an important event. The agent is responsible for performing threshold
checks and only reporting conditions that meet certain threshold criteria. In an SNMP
environment, traps are usually generated as the result of few and critical events, and
the interrupt message is simple and short.
TRAPDEST object. The SNMP agent configuration object that describes an SNMP
manager station to which to route trap messages. The object has three attributes:
COMMUNITY (the name to put in the community-name field of trap PDUs),
HOSTADDR (the Internet address of an SNMP manager to which traps are to be sent),
and NETWORK (the TCP/IP process that handles the sending of trap messages).
trap message. An SNMP message that contains a trap PDU.
trap PDU. An SNMP PDU used to issue traps. The trap PDU contains these fields, with
descriptions that are applicable to the SNMP agent and other HP SNMP products:
UDP. See User Datagram Protocol.
UDP group. The group in MIB-II supported by the TCP/IP Subagent that provides
information about the UDP layer of a TCP/IP subsystem being managed.
User Datagram Protocol. The internet standard protocol that allows an application program
on one machine to send a datagram to an application program on another machine.
UDP uses the Internet protocol to deliver datagrams. The important difference between
UDP and IP is that UDP messages include a protocol port number, allowing the sender
to distinguish among multiple destinations (application programs) on the remote
machine.
varbind.
See
variable binding.
variable binding. In SNMP request, response, and trap PDUs, a list of variable names and
corresponding values.
WAN. See wide area network.
enterprise The object identifier for the SNMP agent, indicating the origin of the trap:
1.3.6.1.4.1.169.3.155.1.
agent-address The Internet address of the system on which the SNMP agent
forwarding trap is installed.
generic-trap A 16-bit number set to 6 to signify that the trap is enterpriseSpecific.
specific-trap A 16-bit number set to 0.
time-stamp A 32-bit number indicating how much time has passed since the SNMP
agent was last started. The subagent inserts 0, and the SNMP agent
inserts the value of sysUpTime from the MIB-II System group.
variable-bindings The objects defined in the EMS Trap MIB.