Patent ID: 9030925
Filing Date: 2015-05-12
Classification: H04L

Abstract:
1. A method for protection switching in a shared node of a telecommunication network, the telecommunication network including first and second end-to-end linear protection domains, each end-to-end linear protection domain having two end nodes that are connected by a working path and a protection path that includes at least one intermediate node, protection resources of the first and second end-to-end linear protection domains being shared at the shared node, which is a common intermediate node of the first and second end-to-end linear protection domains, the method comprising: receiving, by the shared node from one of the end nodes of the first end-to-end linear protection domain, a first protection switching event message notifying that a protection switching event occurs; and determining, by the shared node, whether to prohibit protection switching on the second end-to-end linear protection domain by comparing a priority of the first end-to-end linear protection domain with a priority of the second end-to-end linear protection domain.