Invention Grant
- Patent Title: Resource reservation protocol with traffic engineering point to multi-point label switched path hierarchy
- Patent Title (中): 具有流量工程的资源预留协议指向多点标签交换路径层次
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Application No.: US12871784Application Date: 2010-08-30
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Publication No.: US08462635B1Publication Date: 2013-06-11
- Inventor: Rahul Aggarwal , Yakov Rekhter
- Applicant: Rahul Aggarwal , Yakov Rekhter
- Applicant Address: US CA Sunnyvale
- Assignee: Juniper Networks, Inc.
- Current Assignee: Juniper Networks, Inc.
- Current Assignee Address: US CA Sunnyvale
- Agency: Shumaker & Sieffert, P.A.
- Main IPC: G01R31/08
- IPC: G01R31/08 ; G06F11/00 ; G08C15/00 ; H04J1/16 ; H04J3/14 ; H04L1/00
Abstract:
The invention is directed toward techniques for Multi-Protocol Label Switching (MPLS) upstream label assignment for the Resource Reservation Protocol with Traffic Engineering (RSVP-TE). The techniques include extensions to the RSVP-TE that enable distribution of upstream assigned labels in Path messages from an upstream router to two or more downstream routers of tunnel established over a network. The tunnel may comprise a RSVP-TE P2MP Label Switched Path (LSP) or an Internet Protocol (IP) multicast tunnel. The techniques also include extensions to the RSVP-TE that enable a router to advertise upstream label assignment capability to neighboring routers in the network. The MPLS upstream label assignment using RSVP-TE described herein enables a branch router to avoid traffic replication on a Local Area Network (LAN) for RSVP-TE P2MP LSPs.
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