Invention Grant
- Patent Title: Diffserv traffic engineering compliant backup paths for fast reroute protection in MPLS
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Application No.: US17379167Application Date: 2021-07-19
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Publication No.: US11695689B2Publication Date: 2023-07-04
- Inventor: Gaurav Agarwal , Jayant Kumar Bhardwaj , Manoj Rautela
- Applicant: Ciena Corporation
- Applicant Address: US MD Hanover
- Assignee: Ciena Corporation
- Current Assignee: Ciena Corporation
- Current Assignee Address: US MD Hanover
- Agency: Baratta Law PLLC
- Agent Lawrence A. Baratta, Jr.
- Priority: IN 1811045150 2018.11.29
- Main IPC: H04L12/28
- IPC: H04L12/28 ; H04L45/28 ; H04L47/70 ; H04L45/50 ; H04L45/00 ; H04L45/64 ; H04L47/724 ; H04L12/46

Abstract:
A Point of Local Repair (PLR) network element includes one or more ports and circuitry connected thereto for forwarding and control, wherein the circuitry is configured to receive a PATH message for a Label Switched Path (LSP) tunnel in a Multiprotocol Label Switching (MPLS) network with a specified DiffSery Traffic Engineering (DSTE) Class Type, determine the DSTE Class Type based on the PATH message, and store the DSTE Class Type for the LSP tunnel to ensure a Facility Bypass tunnel used for the LSP tunnel supports the specified DSTE Class Type. The circuitry can be further configured to, responsive to a failure of the LSP tunnel, select the Facility Bypass tunnel for the LSP tunnel such that the Facility Bypass tunnel supports the specified DSTE Class Type.
Public/Granted literature
- US20210352006A1 DiffServ Traffic Engineering compliant backup paths for Fast Reroute protection in MPLS Public/Granted day:2021-11-11
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