Layer-3 switching device with port binding function and data packet forwarding method

Abstract

The invention discloses a three-layer switching device with port binding function and a data forwarding method. The switching device includes a transceiver module, a switching module, a temporary binding module, a port binding module and a routing update module, wherein: the switching The module stores a routing table; the temporary binding module is used to create a temporary request binding including the unique identifier of the network node and the receiving port of the address allocation request message when receiving the address allocation request message of the network node Information; the port binding module is used to generate port binding information according to the address assignment response message of the same network node and the temporary request binding information, and the port binding information will be assigned to the address of the network node, The unique identifier of the network node is bound to the access port of the network node; the routing updating module is used to periodically update the routing table of the switching module according to the port binding information.

Description

technical field [0001] The invention relates to the field of Internet message exchange and forwarding, in particular to a three-layer switching device with port binding function and a data message forwarding method. Background technique [0002] With the continuous improvement of switching technology in data communication, equipment with three-layer switching function has been widely used. Three-layer switching equipment adds routing function on the basis of two-layer switching equipment, so that three-layer switching equipment can forward across VLAN wire speed IPv6 packets, thus greatly enhancing the performance of switching devices. [0003] The three-layer switching device contains IPv6 third-layer routing table items in the switching chip, including host routing table items and network segment routing table items. Next hop), the network segment routing table entry refers to the routing table entry with a prefix length less than 128 bits (2001:: / 16 next hop). In most c...

AI Technical Summary

Problems solved by technology

Since the default communication link of the ND protocol is safe and reliable, and the nodes in the network cannot judge the legitimacy and validity of the ND message from the link, if a malicious node in the link forges its own identity and sends a specially constructed When a neighbor discovers a message, it can launch a spoofing attack on the target node, which will cause the host routing table entries generated by the ND to be unstable, which will cause the network message to not be forwarded normally and affect the reliability of the switching device.

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