| 摘要 |
The present invention discloses a switching method and system. The method comprises the following steps: a dual-homing provider edge (PE) sends a "redundant Pseudo-Wire (PW) transmit-receive defect" message to a remote PE when a dual-homing customer edge (CE) or the dual-homing PE confirms a primary link failure, or the dual-homing PE announces a "link transmit-receive defect" message to the dual-homing CE when the dual-homing PE or the remote PE confirms a primary PW failure; the remote PE switches the traffic from the primary PW to a spare PW for transmission; the dual-homing CE switches the traffic from the primary link to a spare link for transmission. The present invention also provides a switching system. According to the technical solution of the present invention, when the link of the dual-homing CE is in failure, the links and PWs of the dual-homing CEs are rapidly switched without influence on the traffic of single-homing CEs. |
