Invention Grant
- Patent Title: Computer network with point-to-point pseudowire redundancy
- Patent Title (中): 具有点到点伪线冗余的计算机网络
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Application No.: US10925743Application Date: 2004-08-25
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Publication No.: US07643409B2Publication Date: 2010-01-05
- Inventor: Eric Voit , Steve Phillips , Ali Sajassi , Yves Hertoghs
- Applicant: Eric Voit , Steve Phillips , Ali Sajassi , Yves Hertoghs
- Applicant Address: US CA San Jose
- Assignee: Cisco Technology, Inc.
- Current Assignee: Cisco Technology, Inc.
- Current Assignee Address: US CA San Jose
- Agency: The Law Offices of Bradley J. Bereznak
- Main IPC: G01R31/08
- IPC: G01R31/08 ; G06F15/173

Abstract:
A computer network includes a core network connected with first and second Ethernet access domain networks, each of Ethernet access domain networks including a user-facing provider edge (u-PE) device, a primary network-facing provider edge (n-PE) device, a redundant n-PE device, and a plurality of aggregation provider edge (Agg-PE) devices providing connectivity between to the u-PE device and the primary and redundant n-PE devices, the Agg-PE devices running a spanning-tree protocol (STP) algorithm. A primary data path is provided along with first and second redundant data paths that include first and second redundant pseudowires (PWs), respectively, connected across the core network, the first and second redundant data paths being blocked by the STP algorithm when the primary data path is available, the STP algorithm unblocking either the first or second redundant data path in response to a failure of the primary data path. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).
Public/Granted literature
- US20060047851A1 Computer network with point-to-point pseudowire redundancy Public/Granted day:2006-03-02
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