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US 2016/0112349 A1Published application
Method for providing protection switching service in virtual tenant network and controller therefor
AssigneeElectronics and Telecommunications Research Institute
InventorsBin Yeong YOON, Tae Il KIM, Soo Myung PARK, Jong Hyun LEE
Life of this patent
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Abstract
A method for providing a protection switching service in a virtual tenant network (VTN) and a controller are provided. The method enables a real-time protection switching setup on a VTN path in order to provide reliability of a VTN service.
Claims20
A method for providing a protection switching service, comprising:
- receiving a protection switching setup request message from a client entity that requests setup of protection switching on a path in a virtual tenant network (VTN);
- analyzing the protection switching setup request message to check whether or not the client entity requests to share a protection switching group with other client entities;
- in response to a check result indicating that the client entity does not request to share the protection switching group, setting up protection switching for a single client entity to exclusively use the protection switching group;
- and
- in response to a check result indicating that the client entity requests to share the protection switching group, setting up protection switching for a plurality of client entities to share the protection switching group.
2 more elements
The method of claim 16, wherein the requesting to release the working path comprises,
- in a reactive protection mode, requesting the server entity to release an alarm event regarding the working path requested, and
- in a proactive protection mode, requesting the server entity to clear protection switching settings.
A controller comprising:
- a first interface configured to be connected to a client entity which requests a protection switching service on a path in a virtual tenant network (VTN);
- a second interface configured to be connected to a server entity that provides a network infrastructure;
- a path computation element configured to compute routing paths of a working path and a protection path;
- is a protection switching controller configured to manage a protection switching group consisting of a working path and a protection path, set up protection switching according to a request from the client entity, and perform protection switching;
- and
- a storage element configured to store path information table that provides path information for the protection switching.
3 more elements
Dependencies are inferred from the claim text.