Mitigation Of Congestion Loss Risk For MPLS Local-Protection With Facility-Backup
AssigneeGoogle Inc.
InventorsRafal Szarecki, Jonathan Robert Mitchell
Life of this patent
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Abstract
An aspect of the disclosed technology is a process, apparatus, and/or system that provides a capability to automatically derive the bandwidth required for a given bypass tunnel, and use it to compute a compliant path across the network, without reserving bandwidth of a given bypass along its path. This may be implemented by computing (e.g., summing) the signaled bandwidth required of all MPLS LSPs supported by a given bypass tunnel. The computation may be done as part of bypass tunnel re-optimization or re-signaling, prior to the Constrained Shortest Path First (CSPF) algorithm or procedure being run by the PLR or periodically.
Claims20
A method for providing a bypass tunnel in a multi-path label switching (MPLS) network, comprising:
- receiving a request for the bypass tunnel;
- determining a bypass path in the MPLS network for one or more label switched paths, the one or more label switched paths having a predetermined bandwidth value for transporting data;
- and
- signaling the bypass tunnel along the bypass path without reserving a reserve bandwidth for paths associated with the bypass tunnel.
An apparatus for determining a bypass tunnel in a multi-path label switching (MPLS) network, comprising:
- a processing element;
- and
- a memory storing instructions that cause the processing element to:
- receive a request for the bypass tunnel,
- determine a bypass path in the MPLS network for one or more label switched paths, the one or more label switched paths having a predetermined bandwidth value for transporting data, and
- signal the bypass tunnel along the bypass path without reserving a reserve bandwidth for paths associated with the bypass tunnel.
A computer readable medium that stored instructions which when executed by a processor, cause the processor to:
- receive a request for the bypass tunnel;
- determine a bypass path in the MPLS network for one or more label switched paths, the one or more label switched paths having a predetermined bandwidth value for transporting data;
- and
- signal the bypass tunnel along the bypass path without reserving a reserve bandwidth for paths associated with the bypass tunnel.
Dependencies are inferred from the claim text.