Abstract: A method and apparatus for managing networks across multiple domains are disclosed. For example, the method stores a mapping table that correlates one or more Customer Edge Routers (CERs) with one or more Route Processing Modules (RPMs) in at least one seed-file distributor, where each of the one or more Customer Edge Routers (CERs) is monitored by one of the at least one availability manager. The method receives an alarm associated with one of the one or more RPMs that affects one of the one or more CERs, where the alarm is received by one of the at least one availability manager that is monitoring the affected one of the one or more CERs. The method then provides a status associated with the one of said one or more RPMs in accordance with the alarm.

Abstract: Computer systems and techniques for predicting a cable failure in a network system begin by receiving a remote alarm indicator followed by a remote alarm indicator clear as a transmission alarm indicator of an intermittent short duration failure on the transmission path of a circuit. If the transmission alarm indicator is of a duration less than or equal to a preset threshold D it is considered an acceptable short hit transmission alarm. When at least N acceptable transmission alarms have been received and the time stamps of the last N acceptable transmission alarms have been recorded, then a determination is made as to whether N acceptable transmission alarms have been received within a preset time period. A moving window time period is calculated as the difference between the time stamp of the present acceptable transmission alarm K and the time stamp of the [(K?N)+1] acceptable transmission alarm. If the difference is less than or equal to T, a cable error signature is indicated.

Abstract: A method and apparatus for providing trouble isolation for a Permanent Virtual Circuit (PVC) on packet networks are disclosed. For example, the method receives an alert or a ticket for a Permanent Virtual Circuit (PVC) down or a PVC degraded and starts a correlation window for said PVC and port alert or ticket. The method then gathers a plurality of port and PVC alerts for a duration of said correlation window and determines whether or not a port down or a port degraded alert is received along with a PVC down or a PVC degraded alert in said correlation window for one or more ports associated with said PVC.

Abstract: A method of determining a path through a network. Structures in a network are grouped into structure groups, each structure group comprising at least two nodes. Virtual circuit information for every pair of nodes in the structure groups is determined, and connections between the structure groups is determined. A least cost path is determined from a first node to a second node using the virtual circuit information and connection information.