Cisco Technology, Inc.

Jin Huai

Anix Anbiah

Gary Baldwin

Alec Hothan

Xiaopin Nie

Show Chung Chin

Lee Alan Shombert

Stephen Daniel Darryl James

Krishna Kanakasapapathi

Wanq-Der Lee

Thomas Wesley Hoffman

A method and system for providing network management communication between a plurality of network elements are disclosed. A method includes creating a tunnel configured for transmitting data between the network elements and transmitting network management information over the tunnel using a network management protocol. The tunnel passes through a gateway network element configured to communicate with the network elements utilizing the network management protocol.

Method and system for tunneling data using a management protocol

Disclosed is a method and associated apparatus for automatically propagating circuit information in a network. In one embodiment, a network includes multiple circuit switches that are coupled using communications links. Information relating to the communications links are automatically propagated in the network using a protocol used by routers in communicating with other routers.

Automatic propagation of circuit information in a communications network

A method for automatically detecting bi-directional link switched ring link provisioning errors. The method includes receiving an opaque link state advertisement containing bi-directional link switched ring ID and link information at a local node of the ring and checking ring IDs of neighbor nodes of the local node. If the ring IDs of the local node and neighbor nodes do not match a ring ID mismatch alarm is raised.

Method and system for detecting ring link provisioning mismatch

A method for generating a ring map for a bi-directional line switched ring. The method includes identifying a change in a provisioned bi-directional line switched ring and generating a ring map for both directions in the ring at a node of the ring. The generated ring maps are compared to determine if the change in the ring is a result of a link failure or a node change and the node's ring map is updated if there was a node change in the ring.

SONET ring map generation method and system

A method for identifying and choosing a shortest path segment that has an alternate edge disjoint path segment. While routing Unidirectional Path Switched Ring (UPSR) path segments in a graph, there may be several equal distance paths to choose the shortest path from. Choosing a certain path as the shortest path may minimize or eliminate the chance of finding an alternative path segment. A method is provided such that if multiple shortest paths from the source node to a particular destination node exist, the method selects the shortest path which has an alternate edge disjoint path, and which can be used for path protection. The particular shortest path chosen by the method is not necessarily the first shortest path constructed.

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Petaluma, CA, United States of America

Jin Huai