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Rapid gateway switching method and device for hosts in IRDP (ICMP Router Discovery Protocol) network

A fast switching and gateway technology, applied in the field of communications, which can solve problems such as interruption of business traffic

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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There is such a defect in the existing technology: Before the time-to-live expires or before receiving the next valid router advertisement, the traffic of the host will be sent to a router that has failed, resulting in the interruption of business traffic

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  • Rapid gateway switching method and device for hosts in IRDP (ICMP Router Discovery Protocol) network
  • Rapid gateway switching method and device for hosts in IRDP (ICMP Router Discovery Protocol) network
  • Rapid gateway switching method and device for hosts in IRDP (ICMP Router Discovery Protocol) network

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Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention clearer, the solutions of the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0029] The present invention provides a method and an auxiliary method for fast switching of a host gateway in an IRDP network, which are respectively applied to a core router and an IRDP router of the IRDP network. The network includes a core router and an IRDP router, and the core router is used to manage the lower-layer IRDP router , the IRDP router is a router running the IRDP protocol, and is used to notify hosts in the client network of currently available gateway router address information. For the specific architecture of the IRDP network system, please refer to figure 1 and figure 2 . The gateway router can be the same device as the IRDP router, distinguished by different interfaces, that is, there are two logically and one ...

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Abstract

The invention provides a rapid gateway switching method and device for hosts in the IRDP network. The method comprises that a core router regularly detect state information of gateway routers of hosts in a client network; and when the core router detects failure of a certain gateway router, the core router notifies a gateway update message to all IRDP routers which are managed by the core router, so that the corresponding IRDP router is triggered to update a gateway IP address for the host which is influenced by the failure. According to the invention, the host can be rapidly switched to an effective gateway when the present gateway has failure, so that the effectiveness of host communication can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method and a device for fast switching of host gateways in an IRDP network. Background technique [0002] IRDP (ICMP Router Discovery Protocol, Router Discovery Protocol) is an extension of ICMP (Internet Control Message Protocol, Internet Control Message Protocol), which enables each router to periodically transmit an IRDP notification message from each multicast interface, Advertises the IP address of the interface. After receiving the IRDP notification message, the host discovers the addresses of neighboring routers, so that it can dynamically discover the IP address of the default gateway router. In a multi-router environment, IRDP also enables hosts to detect and correct errors due to gateway failures, simplifies network management tasks, and implements redundant configurations in the network. The protocol must be implemented on a host connected to the network, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/703H04L12/757H04L29/12H04L45/28
Inventor 周天弋