Method and device for triggering main and standby interface board inverse switch

A technology of active interface and standby interface, which is applied in the field of network communication, can solve problems such as business data loss, service loss, and undetectable port Down, etc., to achieve uniform fault detection time in the entire network, shorten switching time, and consistent network convergence time Effect

Active Publication Date: 2009-06-24
ZTE CORP
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AI Technical Summary

Problems solved by technology

The detection of electrical signals in the equipment of various manufacturers can not achieve uniform detection time, and it is usually slow. In addition, if the main router connected to the main interface board is not directly connected, but through a switch or a second-layer When the network is connected to the router, the active interface board does not detect that the external port is Down, and cannot switch to the standby interface board, resulting in loss of service data.
[0004] In the above two networking situations, user services will be lost when the link between the 3G network element equipment and the IP bearer network fails.

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  • Method and device for triggering main and standby interface board inverse switch
  • Method and device for triggering main and standby interface board inverse switch
  • Method and device for triggering main and standby interface board inverse switch

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Embodiment Construction

[0046] Bidirectional forwarding detection (Bidirectional Forwarding Detection, referred to as BFD) can greatly improve the fault detection speed and repair function. It provides a simple and abstract method to detect network link capability and system communication forwarding function, and defines a simple and specific method for detecting link or system traffic forwarding capability. In other words, it detects errors in the forwarding path in a fraction of the time and triggers a switchover to an alternate route, an alternate interface board, or even the entire network.

[0047] Bidirectional forwarding detection can provide detection of any link between two systems, including direct physical links, virtual circuits, tunnels, MPLS LSPs (Multi-Protocol Label Switching Label Switching Paths), multi-hop routes, and even asymmetric single link etc. If there are multiple links between the two systems, multiple bidirectional forwarding detection sessions can be established. The s...

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Abstract

The invention provides a method and a device for triggering the switching of main and standby interface boards, including that: a bidirectional forwarding detection (BFD)conversation is established between a 3G device and an IP carrier network; when the main interface board detects the occurrence of fault, switching of the main and the standby interface boards is carried out, and the original standby interface board is switched to a new main interface board. With the method, the time of switching the single boards can be greatly reduced; the fault detection time of the whole network can be unified, and the network convergence time is consistent; a user can combine the function with the bidirectional forwarding detection of multi next hop based on static routing and can realize double-back-up effect when gaining an access to the carrier network.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a method and a device for triggering the switchover of the main and standby interface boards. Background technique [0002] Ordinary IP networks do not have the ability to repair intermittent faults below the second level, and traditional routing architectures have limited capabilities in accurate fault detection for real-time applications (such as voice). Due to the application of voice over IP and other real-time services, the requirements for fast fault detection and correction functions are getting higher and higher. It is very critical to prevent long-term interruption of the network. If the IP network supports high-value applications such as voice, video, leased line or ATM (Asynchronous Transfer Mode), it is very necessary to shorten the troubleshooting time to less than one second. The future development trend of 3G core network equipment is to use all-IP b...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L12/56H04L12/24
Inventor 刘春江
Owner ZTE CORP
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