FIELD: radio engineering, communication.
SUBSTANCE: invention relates to network data communication technology and particularly to a method and a device for link protection in a virtual private local area network. The technical result is reducing loss of data by creating a standby tunnel to which service is switched if malfunction is detected in the main tunnel. The method disclosed herein includes: in a networking process of a VPLS network, a link protection device establishing a main tunnel and a standby tunnel of MPLS TE for a link, and creating a VPLS forwarding table to deal with the information of the established MPLS TE main tunnel and standby tunnel; and when receiving a VPLS message, the link protection device searching the information of the MPLS TE main tunnel of the VPLS message according to a way of accessing the VPLS network of the VPLS message and the VPLS forwarding table, and if the found MPLS TE main tunnel is invalid, then transmitting the received VPLS message by adopting the standby tunnel of the MPLS TE main tunnel.
EFFECT: technical scheme of the present invention can improve the local protection function of VPLS network and reduce loss of service traffic.
8 cl, 2 dwg
