| 摘要 |
The present invention provides a method for constructing a multipath forwarding rule, an apparatus, and a system. A controller invokes a multipath algorithm to generate multiple paths for a data stream; the controller generates a multiport rule of each forwarding device according to the multiple paths; the controller generates metadata according to the multiport rule of each forwarding device, where the metadata includes information for indicating at least one forwarding port of the forwarding device; the controller generates a flow entry establishment indication; the controller sends the flow entry establishment indication to each forwarding device, so that each forwarding device selects the at least one forwarding port of the forwarding device according to the metadata and according to the flow entry establishment indication, to forward the data stream. Because a forwarding device may reuse a port combination according to metadata, after generating a flow entry, a controller does not need to query an already used group, and directly sends the flow entry to each forwarding device, thereby shortening a decision time of the controller. |
