Invention Grant
US09407455B2 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.: US14322643Application Date: 2014-07-02
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Publication No.: US09407455B2Publication Date: 2016-08-02
- Inventor: Olen L. Stokes , Sunil P. Shah , Arnel Lim
- Applicant: Extreme Networks, Inc.
- Applicant Address: US CA San Jose
- Assignee: Extreme Networks, Inc.
- Current Assignee: Extreme Networks, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Ropes & Gray LLP
- Main IPC: H04L12/437
- IPC: H04L12/437 ; H04L12/42 ; H04L12/46 ; H04L12/24 ; H04L12/26 ; H04L12/701 ; H04L12/707 ; H04L12/703

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
- US20140347980A1 REDUNDANT ETHERNET AUTOMATIC PROTECTION SWITCHING ACCESS TO VIRTUAL PRIVATE LAN SERVICES Public/Granted day:2014-11-27
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