Method and system for detecting default gateway state

A default gateway and status technology, which is applied in the transmission system, digital transmission system, data exchange network, etc., can solve problems such as inability to switch in time, lost data packets, and insufficient response, and achieve the effect of reducing data packet loss

Inactive Publication Date: 2008-04-09
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, this detection method has great limitations, because it is necessary to ensure that the default gateway is directly connected to devices such as routers or switches, and the detection speed of this detection method is slow and the response is not sensitive enough, so it often results in After the default gateway fails, the router or switch cannot switch to the backup default gateway in time, which may cause some data packets that need to be forwarded to be lost during this period of time when the default gateway cannot be switched to the backup default gateway in time, resulting in network degradation. System Transmission Performance

Method used

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  • Method and system for detecting default gateway state
  • Method and system for detecting default gateway state
  • Method and system for detecting default gateway state

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Embodiment Construction

[0023] The main principle adopted by the method for detecting the state of the default gateway in the present invention is: first, send request messages to the default gateway regularly; then judge whether the response message returned by the default gateway can be received, if the judgment result is , the default gateway status is normal; if the judgment result is no, the default gateway status is abnormal.

[0024] Among them, the request message is sent to the default gateway regularly, and the request message can be sent to the default gateway periodically, but it is not limited to the periodic rule. Send request message.

[0025] Wherein the request message sent to the default gateway can be an echo request message of the Internet Control Message Protocol (ICMP, Internet Control Message Protocol); in the prior art, ICMP is mainly used for error information and control information Transmission provides an error control mechanism between the device and the destination devi...

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Abstract

The invention discloses a method and a system for detecting default gateway state. The method comprises regularly transmitting request message to a default gateway; and judging whether the response message returned from the default gateway can be received, if yes, the default gateway state is normal; and if no, the default gateway state is abnormal. The system comprises a timer for periodically and regularly performing operation; a transmitting and receiving module for periodically and regularly transmitting request message to the default gateway and receiving the response message returned from the default gateway; and a result generation module for generating the corresponding default gateway state result according to whether the transmitting and receiving module receives the response message returned from the default gateway. The inventive method for detecting default gateway state and the system thereof can timely and rapidly detect the working state of the default gateway.

Description

technical field [0001] The invention relates to the detection of the working state of network equipment, in particular to a method and system for detecting the state of a gateway. Background technique [0002] The Internet network is generally divided into several IP subnets. Switches and routers are network devices that connect multiple IP subnets. The router can perform "address translation" and route selection for data packets between different IP subnets, and then the The switch then exchanges the data packets, so that multiple IP subnets can "read" each other's data packet information for compatible transmission, so as to realize the unimpeded transmission of data packets in the entire network system. [0003] Switches and routers in the network system will use routing tables to select routes when forwarding data packets. In order to reduce the memory space occupied by storing routing tables, default routes are usually set in switches and routers. The default route spe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L29/06H04L12/24H04L12/26
Inventor 兰保青
Owner HUAWEI TECH CO LTD
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