Auto VPN troubleshooting

摘要

The invention is directed to providing a method and system for automatically determining a root cause of a failure in a packet switching telecommunications network using IP/MPLS protocols and having Virtual Private Network (VPN) services such as VLL, VPLS, VPRN.

主权项

1. A method of determining at a service device, a root cause of a failure in a packet switching telecommunications network, the method comprising:
selecting a service access point (SAP); constructing, from a network-aware management system, a network topology map relative to said SAP, wherein the network topology map comprises a hierarchical list of detected failures determined from an order of tests starting at a lowest level of a hierarchy and proceeding to higher levels based upon a probability of errors being detected; analyzing the state of said SAP; analyzing a physical access port associated with said SAP; analyzing a virtual private network (VPN) service hosting said SAP; analyzing a service binding associated with said VPN service; analyzing a layer 2 access interface associated with said binding; analyzing a layer 3 access interface associated with said binding; analyzing all routing protocols associated with said VPN service; determining the root cause by selecting a lowest level failure from the hierarchical list of detected failures; and displaying a root cause analysis of said failure.