Packet forwarding method and device

A device for forwarding a packet, applied to a first node, comprising:

• a receiving module configured to receive a packet to be forwarded, wherein a destination address of the packet is a second node;
• a search module configured to search for a target topology corresponding to the packet in previously generated topologies, wherein the previously generated topologies comprise:
• a first topology and a second topology generated according to a maximum redundancy tree MRT algorithm, and a third topology generated according to a Shortest Path First SPF algorithm, and the first topology, the second topology and the third topology are different from one another;
• and
• a forwarding module configured to search for a next hop node for forwarding to the second node in the target topology, and forward the packet to the next hop node according to a predetermined forwarding mechanism, wherein the predetermined forwarding mechanism is a segmentation route forwarding mechanism based on a global block SRGB in a non-tunnel nesting manner for each topology and each segment route.