Invention Grant
US07990850B2 Redundant Ethernet automatic protection switching access to virtual private LAN services
有权
冗余以太网自动保护切换访问虚拟专用局域网服务
- Patent Title: Redundant Ethernet automatic protection switching access to virtual private LAN services
- Patent Title (中): 冗余以太网自动保护切换访问虚拟专用局域网服务
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Application No.: US12101603Application Date: 2008-04-11
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Publication No.: US07990850B2Publication Date: 2011-08-02
- Inventor: Olen L. Stokes , Sunil P. Shah , Arnel Lim
- Applicant: Olen L. Stokes , Sunil P. Shah , Arnel Lim
- Applicant Address: US CA Santa Clara
- Assignee: Extreme Networks, Inc.
- Current Assignee: Extreme Networks, Inc.
- Current Assignee Address: US CA Santa Clara
- Agency: Blakely Sokoloff Taylor & Zafman LLP
- Main IPC: H04L12/26
- IPC: H04L12/26

Abstract:
Embodiments disclosed herein provide redundant connectivity between an Ethernet Automatic Protection Switching (EAPS) access network and a Virtual Private LAN Service (VPLS) network. A first VPLS node is provided to function as an EAPS controller node. A second VPLS node is provided to function as an EAPS partner node. The first and second VPLS nodes are linked by a pseudowire and an EAPS shared-link. Additional EAPS nodes are also provided. The additional EAPS nodes are linked to each other and one of the additional EAPS nodes is designated as a master node. Links are also established between the VPLS nodes and the EAPS nodes such that one or more EAPS rings are formed. Each EAPS ring includes the shared-link between the first and second VPLS nodes. The EAPS rings are monitored to detect link failures. When a failure of the pseudowire shared-link between the first and second VPLS nodes is detected, all pseudowire links associated with the first VPLS node are disabled if any of the EAPS nodes has a path to both of the VPLS nodes. Otherwise, the existing pseudowire links associated with the first VPLS node are maintained.
Public/Granted literature
- US20090257348A1 REDUNDANT ETHERNET AUTOMATIC PROTECTION SWITCHING ACCESS TO VIRTUAL PRIVATE LAN SERVICES Public/Granted day:2009-10-15
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