发明申请
- 专利标题: Resiliency in minimum cost tree-based VPLS architecture
- 专利标题(中): 最低成本树型VPLS架构的弹性
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申请号: US11212661申请日: 2005-08-29
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公开(公告)号: US20070047556A1公开(公告)日: 2007-03-01
- 发明人: Bijan Raahemi , Bashar Bou-Diab , Fernando Cuervo
- 申请人: Bijan Raahemi , Bashar Bou-Diab , Fernando Cuervo
- 申请人地址: FR Paris
- 专利权人: ALCATEL
- 当前专利权人: ALCATEL
- 当前专利权人地址: FR Paris
- 主分类号: H04L12/28
- IPC分类号: H04L12/28 ; H04L12/56 ; H04J3/26
摘要:
A system for providing resilient multimedia broadcasting services over a VPLS network is described. A network Management System (NMS) calculates disjoint minimum cost trees using the Steiner algorithm executed with extra steps to result in the disjoint trees. Destination PE routers in the VPLS network are connected to the disjoint trees so that they can be serviced by either tree in the case of a fault. Each of the disjoint trees is provisioned with enough bandwidth to carry all of the services provided by the VPLS network. Under normal operation, however, the services are distributed evenly over the trees. In the event of a fault, the services on the faulty tree are switched to the other tree using split horizon bridging. Each Steiner tree can also be realized using poin-to-multipoint LSPs which is fully protected by a precomputed point-to-mulltipoint LSP.
公开/授权文献
- US07719957B2 Resiliency in minimum cost tree-based VPLS architecture 公开/授权日:2010-05-18
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