METHOD, DEVICE AND SYSTEM FOR MAIN/STANDBY SWITCH

摘要

The present invention relates to the field of communication technologies and discloses a method, an apparatus, and a system for active-standby switchover. The method includes: before transmitting a corresponding packet group to a peer under a peer session, copying the corresponding at least one packet group to a standby board; recording the copied packet group and generating according to the sequence of copying a transmission rule chain table of the active board, so that the standby board generates according to the sequence of copying a transmission rule chain table of the standby board which is the same as the active transmission rule chain; and transmitting the packet group according to the sequence of the transmission rule chain table of the active board, so that the standby board monitors the transmission progress of the active board according to the transmission rule chain table of the standby board and resumes transmission from a breakpoint upon an active-standby switchover.