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Method for detecting network link state and network equipment

A network device and network link technology, applied in the direction of network interconnection, data exchange network, data exchange through path configuration, etc., can solve the problem of rapid detection of network link failure protocol detection network link failure, etc., to meet the requirements of The effect of rapid fault detection

Inactive Publication Date: 2020-03-10
BEIJING HUAWEI DIGITAL TECH
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Problems solved by technology

However, in the above hybrid VXLAN scenario, there are some network devices that are not equipped with or do not support common protocols for fast detection of network link failures (such as bidirectional forwarding detection (BFD) protocols), and there is no way to use common fast The protocol for detecting network link failures detects network link failures, and a large amount of traffic packet loss is inevitable

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  • Method for detecting network link state and network equipment
  • Method for detecting network link state and network equipment
  • Method for detecting network link state and network equipment

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Embodiment Construction

[0050] The technical solutions in the present application will be described below with reference to the accompanying drawings.

[0051] In order to facilitate understanding of the solutions of the embodiments of the present application, the concepts and related technologies involved in the present application are first described.

[0052] Virtual extended local area network: It is a technology that encapsulates Layer 2 packets with Layer 3 protocols. Specifically, VXLAN encapsulates Ethernet frames based on the MAC protocol in UDP packets. Further, by encapsulating the UDP packet in the IP packet, the IP packet can be transmitted in the Layer 3 network. Therefore, the transmission of Ethernet frames in the three-layer network is realized. The VXLAN technology uses a VXLAN Network Identifier (VXLAN Network Identifier, VNI) to identify a VXLAN segment (VXLAN segment). Different VXLAN segments correspond to different VNIs. Different VXLAN segments are isolated. Two virtual m...

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Abstract

The invention provides a method for detecting a network link state and network equipment. The method comprises the following steps: a first device sends a first message to the second device through avirtual local area network extension scheme VXLAN tunnel between the first device and the second device, the first message carries a payload and feedback indication information, and the feedback indication information is used for indicating the second device to forward the payload to the first device; and the first device determines a network link state between the first device and the second device according to whether a second message carrying the payload sent by the second device is received. According to the technical scheme, the network link state detection can be realized only by configuring the network link fault detection protocol for the first equipment and forwarding the message by the second device.

Description

technical field [0001] The present application relates to the field of communications, and more particularly, to a method and network device for detecting network link status. Background technique [0002] Virtual local area network (virtual eXtensible local area network, VXLAN) is a network virtualization technology in the virtual network (network virtualization over layer 3, NVO3) on the three-layer network, VXLAN access point VXLAN tunnel endpoint (VXLAN tunnel endpoint) endpoints, VTEP) encapsulate the data packets sent by the virtual machine in the user datagram protocol (UDP), and use the Internet protocol (IP) of the physical network, media access control (medium access control, MAC) Do the outer encapsulation, and then transmit it on the IP network. After reaching the destination, the tunnel endpoint VTEP decapsulates and sends the data to the target virtual machine. Due to its advantages of supporting up to 16M host access and virtual migration, it is widely used i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04L12/46
CPCH04L12/4633H04L12/4641H04L43/0805H04L43/0811
Inventor 周敏
Owner BEIJING HUAWEI DIGITAL TECH
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