Packet forwarding method and related apparatus

By adjusting the next-hop leaf switch for forwarding packets in the data center network, the congestion problem in the multi-path networking structure was solved, the throughput bandwidth and networking performance were improved, packet loss was avoided, and efficient packet forwarding was achieved.

CN116346756BActive Publication Date: 2026-07-24MAIPU COMM TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
MAIPU COMM TECH CO LTD
Filing Date
2023-03-28
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

In data center networks, uneven distribution of local hash forwarding in multi-path networking structures leads to congestion problems, affecting throughput bandwidth and network performance. Existing technologies such as the Flowlet method are not universally applicable, and SDN forwarding models have high computational costs and may result in packet loss.

Method used

By obtaining the usage percentage of the leaf switch sub-buffer pool through the spine switch, the pre-congestion state is determined, the next-hop leaf switch of the packet to be forwarded is adjusted to avoid congestion, and the packet forwarding path is optimized by utilizing traffic characteristics and mapping relationships.

Benefits of technology

It improves the throughput bandwidth and networking performance of RDMA networks, reduces the computing power of controllers, avoids packet loss problems, and has universal applicability.

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Abstract

Embodiments of the present application provide a packet forwarding method and related device, and relate to the field of network communication. A spine switch determines a sub-buffer pool in a pre-congestion state on each leaf switch according to a usage ratio of each sub-buffer pool sent by each leaf switch obtained by the spine switch, and determines a next-hop leaf switch corresponding to a to-be-forwarded packet and a traffic characteristic. The spine switch adjusts the next-hop leaf switch corresponding to the to-be-forwarded packet according to the next-hop leaf switch and the traffic characteristic, a corresponding relationship, and the sub-buffer pool in the pre-congestion state, and forwards the to-be-forwarded packet through the adjusted next-hop leaf switch. The method has universality. Through the method, the distribution of the to-be-forwarded packet on the leaf switch can be adjusted to avoid triggering the PFC mechanism due to congestion of the leaf switch, so that the throughput bandwidth of the RDMA network and the performance of networking can be improved, the computing consumption of the controller can be reduced, and the problem of packet loss can be avoided.
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Citation Information

Patent Citations

  • CN112367277A

  • US20160337258A1