Transmission method, system and router based on a border gateway protocol

A transmission router based on a border gateway protocol (BGP), comprising:

• a standby route notification module, a data packet receiving module, and a data packet forwarding module;
• wherein the standby route notification module is configured to notify a peer autonomous system (AS) of a standby route and a data packet identifier (ID) corresponding to the standby route;
• wherein the data packet receiving module is configured to receive a data packet carrying the data packet ID from the peer AS;
• wherein the data packet forwarding module is configured to forward the data packet via the standby route corresponding to the data packet ID which is carried in the data packet received by the data packet receiving module;
• means for judging whether the data packet needs to be forwarded via the standby route or not, according to the data packet ID between the data packet receiving module which receives the data packet from the peer AS, and wherein the data packet forwarding module forwards the data packet via the standby route corresponding to the data packet ID carried in the data packet;
• and
• means for enabling the data packet forwarding module to forward the data packet via the standby route corresponding to the data packet ID which is carried in the data packet, if the data packet needs to be forwarded via the standby route according to the data packet ID.

A transmission system based on a border gateway protocol (BGP), comprising a first router in a local autonomous system (AS) and a second router in a peer AS, wherein:

• the first router in the local AS comprises:
• a standby route notification module, configured to notify a peer autonomous system (AS) of a standby route and a data packet identifier (ID) corresponding to the standby route;
• a data packet receiving module, configured to receive a data packet carrying the data packet ID from the peer AS;
• a data packet forwarding module, configured to forward the data packet via the standby route corresponding to the data packet ID which is carried in the data packet received by the data packet receiving module;
• means for judging whether the data packet needs to be forwarded via the standby route or not, according to the data packet ID between the data packet receiving module which receives the data packet from the peer AS, and wherein the data packet forwarding module forwards the data packet via the standby route corresponding to the data packet ID carried in the data packet;
• and
• means for enabling the data packet forwarding module to forward the data packet via the standby route corresponding to the data packet ID, which is carried in the data packet, if the data packet needs to be forwarded via the standby route according to the data packet ID;
• and
• the second router in the peer AS, configured to receive and store the standby route and the data packet ID corresponding to the standby route notified by the first router in the local AS, carries the data packet ID corresponding to the standby route in the data packet when the data packet needs to be forwarded via the standby route, and sends the data packet carrying the data packet ID to the first router in the local AS.