METHOD OF PROTECTION SWITCHING FOR LINK AGGREGATION GROUP AND APPARATUS THEREOF

摘要

A protection switching method for a link aggregation group and an apparatus thereof are provided to perform the protection switching independently for respective VLANs(Virtual Local Area Networks) by generating an OAM frame according to a G.8031 standard. A protection switching apparatus includes an LAG(Link Aggregation Group) distribution path information extractor(223) and an OAM(Operations, Administration and Maintenance) frame header generator(224). The LAG distribution path information extractor determines the physical port for a working LAG or a protection LAG from plural physical ports, to which an Ethernet frame from a MAC(Media Access Control) client is distributed. The OAM frame header generator generates a header of the OAM frame, which is related to the Ethernet frame based on the extracted path information. A protection switching scheme according to a G-8031 standard is allocated to the LAG. The OAM frame and the Ethernet frame are distributed to the same physical ports of the working or protection LAG for respective VLANs.