Data or packet forwarding method, node, and system

A forwarding method performed by a forwarding node including a network adapter, wherein the network adapter includes a network adapter memory, a plurality of ports, and at least one processor;

• wherein the method comprises:
• receiving, by the at least one processor, a broadcast packet from a first node through a first port in the plurality of the ports for querying a Medium Access Control (MAC) address of a second node, wherein the broadcast packet includes a MAC address of the first node and an Internet Protocol (IP) address of the second node;
• comparing the IP address of the second node carried in the broadcast packet with an IP address of the forwarding node to determine whether the forwarding node is a destination node;
• and
• upon determining that the forwarding node is not the destination node, performing operations comprising:
• recording, by the at least one processor, a first correspondence between the first port and the MAC address of the first node in the network adapter memory,
• forwarding, by the at least one processor, the broadcast packet through one or more ports in the plurality of ports other than the first port,
• receiving, by the at least one processor, a response packet of the broadcast packet through a second port in the plurality of the ports, wherein the response packet includes the MAC address of the second node and the MAC address of the first node, and
• forwarding, by the at least one processor, the response packet through the first port determined based on the first correspondence;
• and
• when the IP address of the forwarding node is carried in the broadcast packet, storing a correspondence between the MAC address of the first node and an IP address of the first node in the network adapter memory,
• wherein the response packet further includes a response identifier indicating whether the forwarding node needs to determine whether a quantity of forwarding times of the response packet needs to be greater than a forwarding threshold.