Data transmission system and host
By backing up the link context of the RDMA network device in the source host's memory, seamless switching of the intelligent network interface card is achieved, solving the problem of user experience degradation caused by intelligent network interface card failure and ensuring the continuity and efficiency of data transmission.
WO2026137992A1PCT designated stage Publication Date: 2026-07-02HUAWEI TECH CO LTD
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- HUAWEI TECH CO LTD
- Filing Date
- 2025-09-10
- Publication Date
- 2026-07-02
AI Technical Summary
Technical Problem
In Remote Direct Memory Access (RDMA), when the smart network interface card fails, manual intervention by the user is required, leading to a degraded user experience.
Method used
By backing up the link context of network devices in the source host's memory, seamless switching of network devices is achieved. Middleware is used to automatically switch to a backup network device in case of failure, ensuring the continuity of data transmission.
Benefits of technology
It improves user experience, reduces perceived interruptions, and ensures normal and efficient data transmission.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN2025120472_02072026_PF_FP_ABST
Abstract
Embodiments of the present application relate to the technical field of communications, and provide a data transmission system and a host. The data transmission system comprises a first source network device and a second source network device on a source host, and a first destination network device on a destination host. The source host communicates with the destination host by means of RDMA. When the first source network device is faulty, the second source network device acquires a copy of a first link context, and transmits, on the basis of the copy of the first link context, a target packet in a transmit queue to the first destination network device. The first destination network device transmits a response packet for replying to the target packet, the copy of the first link context being stored in a memory of the source host other than the first source network device, the first link context comprising transmit queue information, and the transmit queue information being used to indicate a transmission state of a packet in the transmit queue. The solution of the present application can achieve user-imperceptible switching from a faulty network device, thereby improving user experience.
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