Problem Impact propagation policy over VLANs setting

Default values for the Problem Impact propagation policy over VLANs setting lists the Problem Impact propagation policy over VLANs setting parameters.

Table 1. Default values for the Problem Impact propagation policy over VLANs setting

Parameter	Default Value	Description
ImpactPropagation	ENABLED	Determines whether to allow problems on devices in a VLAN to propagate impacts on other devices in the same VLAN. The value can be ENABLED or DISABLED. ENABLED allows impact propagation for the VLANs that belong to the VLAN impact propagation group. DISABLED prevents impact propagation for the VLANs that belong to the VLAN impact propagation group. Note: If a VLAN is not a member of any VLAN impact propagation group, impact propagation is allowed for the VLAN. Discovery is required for any change to take effect.

To use the “Problem Impact propagation policy over VLANs” setting to create a VLAN impact propagation group, you need to change the setting’s ImpactPropagation parameter to DISABLED. Accessing the Polling and Thresholds Console and modifying the parameters in a setting are described in “Introduction to the Polling and Thresholds Console” on page 138 and “Working with groups and settings” on page 144.

When a VLAN becomes a member of a VLAN impact propagation group that has ImpactPropagation = DISABLED, the IP Manager sets the following attribute of the VLAN to FALSE:

isImpactPropOverVLANEnabled

For a VLAN that has isImpactPropOverVLANEnabled = FALSE, impact propagation for the VLAN is prevented.

For a VLAN that has isImpactPropOverVLANEnabled = TRUE (the default), impact propagation for the VLAN is allowed.