Route forwarding method, system and device and readable storage medium

The invention discloses a routing forwarding method, system and device and a readable storage medium, and the routing forwarding method comprises the steps: creating a plurality of three-layer routing forwarding sub-interfaces, binding different three-layer routing forwarding sub-interfaces with different physical queue groups, and binding the physical queue groups with an output port; and allocating guaranteed bandwidths to different physical queue groups, and when the expected bandwidth of the physical queue group is greater than the guaranteed bandwidth, the actually occupied bandwidth of the physical queue group is not less than the guaranteed bandwidth; and transmitting the to-be-forwarded message to the corresponding physical queue group based on the three-layer routing forwarding sub-interface code of the to-be-forwarded message, and sending the to-be-forwarded message along the output port. According to the routing forwarding method provided by the invention, in the routing forwarding process, various