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A traceroute method and device

A technology for routing and requesting messages, which is applied to data exchange through path configuration, digital transmission systems, data exchange networks, etc. It can solve the problems of unable to feed back ICMP overtime messages, unable to obtain, and destination terminals unable to feed back ICMPEchoReply route tracking, etc.

Active Publication Date: 2021-11-23
NEW H3C SECURITY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the intermediate device on the VXLAN tunnel and the gateway of the user terminal cannot obtain the TTL (time to live) of the inner layer ICMP EchoRequest request message and cannot feed back the ICMP overtime message used for route tracking; and the gateway of the user terminal removes the VXLAN encapsulated Since the TTL of the ICMP Echo Request message has not been modified, the destination terminal cannot feedback ICMP Echo Reply (response) to perform route tracking

Method used

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  • A traceroute method and device
  • A traceroute method and device
  • A traceroute method and device

Examples

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Embodiment Construction

[0021] A detailed description will be given with a plurality of examples shown in a plurality of drawings. In the following detailed description, numerous specific details are used to provide a thorough understanding of the present disclosure. Well-known methods, procedures, components and circuits have not been described in detail in order not to obscure the examples.

[0022] Among the terms used, the term "comprising" means including but not limited to; the term "comprising" means including but not limited to; the terms "above", "within" and "below" include the number; the terms "greater than" and "less than" mean not Include this number. The term "based on" means based on at least a portion thereof.

[0023] figure 1 As shown, the route tracking method provided by the present invention includes the following steps:

[0024] Step 101, determine to carry out three-layer forwarding to the received ICMP response request message;

[0025] Step 102, subtracting 1 from the t...

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PUM

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Abstract

The present invention provides a routing tracking method and device, the device determines to carry out three-layer forwarding of the received ICMP response request message; the survival time of the received ICMP response request message is reduced by 1; when the received second The modified life time of the received ICMP echo request message is not equal to 0, and the Ethernet and VXLAN encapsulation is re-encapsulated for the first received ICMP echo request message; the modified lifetime time of the received ICMP echo request message is copied The time to live until its VXLAN encapsulation is used to indicate the forwarding hops of the route for forwarding the ICMP echo request message through the VXLAN tunnel.

Description

technical field [0001] The invention relates to technology, in particular to a route tracing method and equipment. Background technique [0002] VXLAN (Virtual Extensible Local Area Network, Virtual Extensible Local Area Network) technology takes the existing three-layer physical network as the Underlay (lower layer) network, and builds a virtual two-layer network on it, that is, the Overlay (upper layer) network. The overlay network uses the encapsulation technology and the layer-3 forwarding path provided by the underlay network to realize the transfer of tenant layer-2 packets across the layer-3 network and between different sites. For tenants, the Underlay network is transparent, and different sites of the same tenant are like working in a local area network. [0003] In the VXLAN EVPN (Ethernet Virtual Private Network, Ethernet Virtual Private Network) distributed gateway network, the VTEP (Virtual Tunnel End Point, Virtual Tunnel End Point) of each site is used as the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/733H04L12/741H04L12/46H04L45/122H04L45/74
CPCH04L45/20H04L45/74H04L12/4633H04L12/4641
Inventor 陈焕银赵海峰
Owner NEW H3C SECURITY TECH CO LTD