Designing and Managing Behavior Models - Creating Multi-Alarm Behavior Models - IfUpDownStatusByType - IF-IfFramePVC -
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IF-IfFramePVC

Unlike the other interface-type alarms, the IF-IfFramePVC relies on a frame relay MIB with which to monitor frame relay permanent virtual circuit (PVC) subinterfaces. NerveCenter instantiates IF-IfFramePVC when a frame relay PVC interface is non-active. The definition for IF-IfFramePVC, is shown below.

IF-IfFramePVCStatus contains the following states:

• Ground

  No evidence that the interface is down. If the interface is down, goes to FramePVCUp/Down. If the interface is active, goes to IfFramePVC.

• FramePVCUp/Down

  Mask indicates that a link is either up or down. The interface is polled. If the interface is up, NerveCenter sends a 1510 Inform to the platform and returns to IfFramePVC. If a cold or warm start is detected, returns to Ground. If the interface is down, NerveCenter sends a 1511 Inform to the platform and goes to IfFramePVCDown.

• IfFramePVCDown

  Poll indicates that an interface down. NerveCenter sends a 1511 Inform to the platform. The interface is polled. If the interface is up, NerveCenter sends a 1510 Inform to the platform and goes to IfFramePVC. If a cold or warm start is detected, returns to Ground. If the interface is up or down, goes to FramePVCUp/Down.

• IfFramePVC

  Interface is active. If a cold or warm start is detected, returns to Ground. If the interface is up or down, goes to FramePVCUp/Down. If the interface is down, NerveCenter sends a 1511 Inform to the platform and goes to IfFramePVCDown.