SVS 200 SNMP Agent Reference Guide (AE002-96035, October 2007)

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Table 4 SNMP Trap Triggering Events

Events

Description

Acute failure detected.

All operations in a subsystem stopped.

Serious failure detected. Operation in a component where a failure occurred stopped.

Moderate failure detected. Partial failure.

Service failure detected. Minor failure.

An SNMP agent logs the most recent 256 traps, so you can see the trap history of a particular device.

SNMP Agent Command

Table 5 on page 13 shows the types SNMP Agent operations.

Table 5 SNMP Agent Operations

Operation Description

GET

Obtains a speciﬁcMIBobjectvalue.

GET REQUEST is the request from an SNMP manager, and GET RESPONSE is the

agent’s response to that request.

GETNEXT

Continuously ﬁnds a MIB object.

GETNEXT REQUEST is the request from an SNMP manager, and GETNEXT RESPONSE

is the agent’s response to that request.

TRAP

Reports an event (failure) to an SNMP manager.

TRAP occurs without a request from the SNMP manager.

Error Reporting

Table 6 on page 13 shows errors to be reported for the REQUEST operations.

Table 6 SNMP Agent REQUEST Operations

Error

Description Corrective Action

noError(0)

Normal

N/A

noSuch-

Name(2)

• There are no MIB objects that are

required. (Not supported).

• The GETNEXT REQUEST command

that is speciﬁed for the following object

identiﬁer of the last supported MIB

object is received.

Verify that the requested object is correct.

readOnly(4) SET REQUEST is received. SET operation is not supported.

genErr(5)

Error occurred for other reasons.

Retry the operation.

SNMP Manager and SNMP Agent Interaction

When an SNMP Manager polls the agent, the following dialogue takes place:

• An SNMP manager sends a request packet to an SNMP agent, which requests data regarding

the status of managed node.

• The SNMP agent sends a response packet back to the SNMP manager.

XP12000/XP10000/SVS 200 SNMP Agent Reference Guide