Loop detection method and device

A loop detection and forwarding path technology, applied in the network field, can solve problems such as time-consuming and low efficiency, and achieve the effect of improving inspection efficiency

Active Publication Date: 2017-05-31
BEIJING HUAWEI DIGITAL TECH
View PDF5 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a loop detection method and device to

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Loop detection method and device
  • Loop detection method and device
  • Loop detection method and device

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0054] The embodiments of the present invention will be described below in conjunction with the drawings.

[0055] The device referred to in the embodiment of the present invention may be a network-side edge device, or a router, or a packet transport network (Package Transport Network, PTN) device, etc.

[0056] The Time To Live (TTL) field referred to in the embodiment of the present invention is used to indicate the maximum number of network segments that an IP data packet is allowed to pass through before being discarded by a router, that is, the maximum number of hops that an IP data packet can forward in a computer network . TTL is set by the sending host to prevent data packets from continuously circulating on the IP Internet network forever. The maximum value of TTL is 255.

[0057] Specifically, the TTL field is set by the sender of the IP data packet. On the entire forwarding path of the IP data packet from the source address to the destination address, the router will mod...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to the technical field of the network and in particular to a loop detection method and a device in order to solve the problems of manual detection loop failure that the time-consuming is low and the efficiency is low. The method comprises the following steps: while a first device receives a message in which the time to live (TTL) is 0, the destination IP address of the message in which the TTL is 0 is obtained, the first device generates a loop detection message, the destination address of the loop detection message is the destination IP address, and the source address of the loop detection message is the IP address of the first device, the loop detection message comprises a device information field, the device information field is used for recording identification information of each device through which the loop detection message passes, and the device information field comprises the identification information of the first device; and the first device determines the forward path according to the target address of the loop detection message, and forwards the loop detection message according to the forward path.

Description

technical field [0001] The invention relates to the field of network technology, in particular to a loop detection method and device. Background technique [0002] In a three-layer network, such as a long-term evolution (Long Term Evolution, LTE) network, refer to figure 1 As shown in the figure, problems such as routing configuration or equipment failure will cause a loop fault, which will result in the inability to successfully send packets to the destination address and cause service damage. If it is too large and the link bandwidth resource is fixed, the normal non-looped packets will be discarded, causing normal non-looped service failures. [0003] For example, figure 1 In a subnet, the edge devices (Provider Edge, PE) 1, PE2, PE3, and PE4 on the network side constitute a loop fault, so that the packets are forwarded circularly among PE1, PE2, PE3, and PE4, so that the purpose cannot be achieved. address. In addition, PE3 and PE4 may also form loop faults with devi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04L12/705H04L12/26H04L12/24H04L45/18
CPCH04L41/0631H04L41/0677H04L43/10H04L45/18
Inventor 陈刚
Owner BEIJING HUAWEI DIGITAL TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products