| 主权项 |
1. A protection switching method of performing protection switching in a network in which a plurality of protection paths are formed for a working path between a first node and a second node, the protection switching method comprising:
determining, by the first node, first preference levels, each for one of the plurality of protection paths, corresponding to an order in which the first node preferentially selects the protection paths when performing the protection switching; and exchanging, by the first node, pieces of information about the first preference levels with the second node so that the first preference levels for each protection path are identical to second preference levels, each determined for one of the plurality of protection paths by the second node, before performing the protection switching, including modifying at least one of the first and second preference levels by
comparing the first preference levels and the second preference levels,generating a report message, comprising information of one of the protection paths of which the first and second preference levels are not identical to each other, based on a result of the comparison, anddetermining a new preference level for the one protection path based on the report message. |
