Enhanced path selection scheme for equal cost paths in communication networks
AssigneeCisco Technology, Inc.
InventorsTarek Saad, Sherif Saeed Awad, Zafar Ali, Michel Taillon
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Abstract
In one embodiment, a node in a communication network receives a label switched path (LSP) request and in response, the node determines at least two equal cost paths, each path having one or more path-nodes. The node may then further determine a total bandwidth-based transition value for each path of the at least two equal cost paths and selects the path having a lower total transition value. Once selected, the node may establish the requested LSP over the selected path.
Claims20
A method, comprising:
- receiving, at a node in a communication network, a label switched path (LSP) request;
- determining, in response to the LSP request, at least two equal cost paths, each path of the at least two equal cost paths having one or more path-nodes;
- determining a total bandwidth-based transition value for each path of the at least two equal cost paths;
- selecting the path having a lower total transition value;
- and
- establishing the requested LSP over the selected path.
An apparatus, comprising:
- one or more network interfaces to communicate with an optical transport network (OTN);
- a processor coupled to the network interfaces and adapted to execute one or more processes;
- and
- a memory configured to store a process executable by the processor, the process when executed operable to:
- receive a label switched path (LSP) request;
- determine, in response to the LSP request, at least two equal cost paths, each path of the at least two equal cost paths having one or more path-nodes;
- determine a total bandwidth-based transition value for each path of the at least two equal cost paths;
- select the path having a lower total transition value;
- and
- establish the requested LSP over the selected path
A tangible, non-transitory, computer-readable media having software encoded thereon, the software when executed by a processor operable to:
- receive a label switched path (LSP) request;
- determine, in response to the LSP request, at least two equal cost paths, each path of the at least two equal cost paths having one or more path-nodes;
- determine a total bandwidth-based transition value for each path of the at least two equal cost paths;
- select the path having a lower total transition value;
- and
- establish the requested LSP over the selected path.
Dependencies are inferred from the claim text.