| 摘要 |
A method and a device of network protection are disclosed to protect transmission of the PBT service when a link or node fails in the PBT network. The method comprises: switching a Provider Backbone Transport (PBT) service impacted by a fault to a protection Provider Backbone Bridge (PBB) service according to a preconfigured corresponding relationship between the PBT service and the protection PBB service when a working link or a working node fails in a ring network; and forwarding a service frame of the protection PBB service in a PBB service forwarding mode. A network device for implementing such a method is also disclosed. The technical solution under the present disclosure enables simultaneous transmission of both the PBT service and the PBB service in the same network, requires use of only one protection technology, and draws upon the traditional Ethernet protection technology to protect the PBT service.
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