Connectivity threshold setting

The Connectivity threshold setting configures connectivity threshold parameters for interfaces and ports. It also controls:

• The use of bridging connectivity for root-cause analysis.

• The analysis of systems that repeatedly restart, and are thus considered unstable.

  The IP Availability Manager User Guide provides information about how the IP Availability Manager concludes that a system is unstable.

• Whether SystemRestarted traps are sent to the Service Assurance Manager Adapter Platform (Adapter Platform).

  “Enabling the SystemRestarted and ConfigChange events” on page 64 provides information about how the IP Availability Manager concludes that a system is restarted.

  Default values for the Connectivity threshold setting lists the Connectivity threshold setting parameters.

Table 1. Default values for the Connectivity threshold setting

Parameter	Default value	Description
CorrelationUseBridgingMode	ENABLED,DISABLED Default: DISABLED	Enables or disables the use of bridging connectivity for root-cause analysis. Bridging connectivity is not as precise as physical connectivity, and this parameter controls the extent to which the analysis relies on bridging connectivity. The parameter is set to ENABLED by default because, under normal conditions, most physical connectivity is discovered and there is sparse bridging connectivity. However, you can set the parameter to DISABLED in cases where there is sparse physical connectivity and heavily meshed bridging connectivity.
EnableGenericOIEvent	ENABLED,DISABLED Default: DISABLED	Enables or disables the sending of a SystemRestarted trap for a system to the Adapter Platform whenever the uptime of the system equals or exceeds the MaxUpTimeThreshold parameter value. ENABLED activates the sending of a SystemRestarted trap to the Adapter Platform. DISABLED suppresses the sending of a SystemRestarted trap to the Adapter Platform.
MaxUpTimeThreshold	1 to 1436 minutes Default: 60 minutes	Threshold uptime, in minutes, at or above which a system is considered to be restarted. That is, if the uptime of the system equals or exceeds the time that is specified for this parameter, the system is considered to be restarted.
NumberOfBridgedViaThreshold	Default: 20	Determines whether a BridgedVia relationship is used in correlation. If a MAC endpoint is BridgedVia less than the number of ports that are specified by this threshold, the BridgedVia relationship is used for correlation.
NumberOfBridgesThreshold	Default: 20	Determines whether a Bridges relationship is used in correlation. If a port bridges less than the number of MAC endpoints that are specified by this threshold, the Bridges relationship is used for correlation.
RestartTrapThreshold	0 to 10 Default: 3	Number of SNMP cold or warm start traps that must be received within the amount of time set by the RestartTrapWindow parameter in order for the system to be considered unstable. A value of 0 turns off restart analysis.
RestartTrapWindow	30 to 3600 seconds Default: 900 seconds (15 minutes)	Window of time that is used to monitor a system’s repeated restarts. If the number of start traps equals or exceeds the RestartTrapThreshold during this window of time, the system is considered to be unstable.
TestingNotificationMode	ENABLED,DISABLED Default: ENABLED	Enables or disables the generation of the Down notification for an interface or port. ENABLED activates the diagnosis of an interface or port that is in testing status. DISABLED suppresses the diagnosis of an interface or port that is in testing status.