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Network segment detection method and device

A detection method and detection device technology, applied in the field of data communication, to achieve the effect of simple implementation and simple processing flow

Active Publication Date: 2010-12-29
ZTE CORP
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0007] In view of this, the present invention proposes a network segment detection method to solve the problem in the prior art that all routers on the forwarding path need to participate in the detection of UDP datagrams and ICMP when detecting network segments. The problem of creating a response, for this reason, the present invention also proposes a network segment detection device

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  • Network segment detection method and device

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Embodiment Construction

[0035] The main technical idea of ​​the present invention: based on ping technology, increase the judgment to the network segment IP address in the existing ping processing process, specifically by increasing the judgment to the icmp-request message destination IP address on the router, when receiving icmp The router of the -request message judges that the destination IP address is equal to the IP address on the local directly connected network segment, then the network segment is reachable, and returns a response to the initiator of the icmp-request message.

[0036] The implementation of the technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0037] Such as figure 1 Shown, the specific implementation steps of the method of the present invention are as follows:

[0038] S11. The data communication interface of the router receives an icmp-request message sent by the source host; the icmp-reque...

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Abstract

The invention provides a network segment detection method and a device, the judgment of target IP address of an icmp-request (Internet control message protocol request) message is increased on a router, when the router receiving the icmp-request message judges that the target IP address is equal to the IP address on a local directly connected network segment, then the network segment is accessible, and a response is returned to an initiator of the icmp-request message. The method only increases the network segment IP address judgment treatment in the existing ping treatment process, and the judgment is parallel to the host IP address judgment on the logic, thereby not increasing additional treatment burden on a terminal, being unnecessary to use an intermediate router on a routing forward path to participate in the detection and the judgment of the accessibility of the target network segment and being simple and direct to realize.

Description

technical field [0001] The invention relates to the field of data communication, in particular to a method and device for detecting the reachability of a destination network segment. Background technique [0002] With the rapid development of the Internet, IP networks have gradually become an indispensable tool in people's daily work and life. At present, the routing and forwarding mechanism of Ethernet IP packets generally adopts the longest route matching principle, which means: when the destination IP address of the forwarded message matches multiple forwarding routing entries in the Select the routing entry with the longest matching subnet mask as the forwarding route of the message. [0003] Now almost all network communication devices have the detection function of the reachability of the destination host, that is, Ping (Packet Internet Groper, Internet report detector), and the Ping technology is based on the IP address of the destination host to play a role and func...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04L12/56H04L29/12
Inventor 周昆
Owner ZTE CORP
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