Invention Grant
- Patent Title: Bgp Lu resiliency using an anycast SID and BGP driven anycast path selection
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Application No.: US17366271Application Date: 2021-07-02
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Publication No.: US11563675B2Publication Date: 2023-01-24
- Inventor: Himanshu Shah , Atul Vadera , Jayant Kumar Bhardwaj , Piyush Sharma
- Applicant: Ciena Corporation
- Applicant Address: US MD Hanover
- Assignee: Ciena Corporation
- Current Assignee: Ciena Corporation
- Current Assignee Address: US MD Hanover
- Agent Lawrence A. Baratta, Jr.
- Priority: IN202111021859 20210514
- Main IPC: H04L45/50
- IPC: H04L45/50 ; H04L12/46 ; H04L45/00

Abstract:
A node, in a first network, includes circuitry configured to add a label stack to a packet associated with one of a Layer 2 Virtual Private Network (L2VPN) and a Layer 3 Virtual Private Network (L3VPN), wherein the packet is destined for a second network having at least a pair of Border Gateway Protocol-Label Unicast (BGP-LU) Route Reflector (RR) nodes interconnecting the first network, and wherein the label stack includes an anycast Segment Identifier (SID) for the RR nodes, in Segment Routing, and transmit the packet to the second network. The label stack also includes a BGP-LU label for a destination in the second network. Responsive to isolation of one of the RR nodes, a Point of Local Repair (PLR) node in the first network is configured to implement Topology-Independent Loop-Free Alternate (TI-LFA) for the anycast SID.
Public/Granted literature
- US20220368629A1 BGP LU resiliency using an anycast SID and BGP driven anycast path selection Public/Granted day:2022-11-17
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