Cisco Technology, Inc.

Kannan Jayaraman

Samer Salam

Shwetha Subray Bhandari

Arvind Saproo

Jose Antonio Liste

A method is provided in one example and includes receiving a current bandwidth characteristic for a link, where the current bandwidth characteristic is determined under fading conditions associated with signal propagation on the link. The method can also include calculating a new cost for the link that is different from a nominal cost associated with a nominal bandwidth of the link without the fading conditions. The method could also include routing at least a portion of a plurality of flows that are to traverse the link away from the link based, at least in part, on the new cost. Another example method includes receiving the current bandwidth characteristic for the link, comparing the current bandwidth characteristic with a preconfigured low watermark corresponding to a class-specific MTR topology associated with a class of traffic traversing the link, and removing the link from the MTR topology based on the current bandwidth characteristic.

System and method for layer 3 ring protection with adaptive bandwidth microwave links in a network environment

In one embodiment, a packet switching device receives a notification that a link has a diminished packet transport capacity. In response, the packet switching devices changes forwarding information for a portion of the packet traffic being sent over the diminished packet transport capacity link to traverse one or more reroute paths not including the diminished link, while some packet traffic continues to use the diminished packet transport capacity link. This notification can be received directly from a communications device, or via a routing protocol such as for a remote link that sent packet traffic may traverse. These rerouted paths may be precomputed and installed in forwarding data structures for fast rerouting, or computed and installed in response to receiving the notification. In one embodiment, quality of service (QoS) is adjusted in response to receiving the notification.

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Bengaluru, India

Kannan Jayaraman