IP SLA Test Reactions

This section describes properties of an IP SLA test reactions (i.e. how and when a Cisco device reacts to test failures). More details about those properties can be found in Cisco IP SLA references and CISCO-RTTMON-MIB file.

This table contains advanced IP SLA test properties. In most cases it should not be edited manually.

Properties

Property

Description

Connection Enable

(rttMonReactAdminConnectionEnable)

If true, a reaction is generated when a RTT operation to a Target Address (echo type) causes the test to enter Connection Lost state. Thus connections to intermediate hops will not cause this value to change.

Timeout Enable

(rttMonReactAdminTimeoutEnable)

If true, a reaction is generated when a RTT operation causes the test to enter Timeout state.  

When the test Type is 'pathEcho' timeouts to intermediate hops will not cause Timeout state.

Threshold Type

(rttMonReactAdminThresholdType)

This object specifies the conditions under which force the test to enter threshold violation (i.e. Warning, Critical or Failure) state:

NOTE: When the test Type is 'pathEcho' this objects value and all associated object values are only valid when RTT 'echo' operations are to the rttMonEchoAdminTargetAddress object address.  Thus 'pathEcho' operations to intermediate hops will not cause this object to change.

  • never - threshold violation never occurs
  • immediate - threshold violation occurs when an operation completion time exceeds Threshold value; conversely threshold violation is deactivated when an operation completion time falls below Threshold Falling
  • consecutive - threshold violation occurs when an operation completion time exceeds Threshold on Threshold Count, X consecutive RTT operations; conversely, threshold violation is deactivated when an operation completion time falls under the Threshold Falling for the same number of consecutive operations
  • xOfy - threshold violation occurs when x (as specified by Threshold Count, X) out of the last y (as specified by Threshold Count, Y) operation completion time exceeds Threshold; conversely, it is set to false when x, out of the last y operation completion time fall below Threshold Falling

 NOTE: When x > y, the probe will never generate a reaction.

  • average - threshold violation occurs when the running average of the previous Threshold Count operation completion times exceed Threshold; conversely, it is set to false when the running average falls below the Threshold Falling

If this value is changed by a management station, threshold violation is reset, but no reaction is generated if threshold violation was active.

Threshold Falling

(rttMonReactAdminThresholdFalling)

This object defines a threshold limit. If the RTT operation time falls below this limit and if the conditions specified in Threshold Type are satisfied, an threshold is generated.

Threshold Count, X

(rttMonReactAdminThresholdCount)

This object defines the 'x' value of the xOfy condition specified in Threshold Type.

Threshold Count, Y

(rttMonReactAdminThresholdCount2)

This object defines the 'y' value of the xOfy condition specified in Threshold Type.

Action Type

(rttMonReactAdminActionType)

Specifies what type(s), if any, of reaction(s) to generate if an operation violates one of the watched conditions:

  • none - no reaction is generated
  • trapOnly - a trap is generated
  • nmvtOnly - an SNA NMVT is generated
  • triggerOnly - all trigger actions defined for this entry are initiated
  • trapAndNmvt - both a trap and an SNA NMVT are generated
  • trapAndTrigger - both a trap and all trigger actions are initiated
  • nmvtAndTrigger - both a NMVT and all trigger actions are initiated
  • trapNmvtAndTrigger - a NMVT, trap, and all trigger actions are initiated

Error Enable

(rttMonReactAdminVerifyErrorEnable)

If true, a reaction is generated when an RTT operation error occurs.

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