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A kind of L3 maintenance diagnosis method, device and system in L2 and L3 VPN

A diagnostic method and diagnostic system technology, applied in the field of packet transmission network, can solve problems such as IP address conflicts, maintenance function deployment obstacles, and inability to fully represent the real situation of actual business, and achieve the effect of simplifying configuration and solving business path segmentation

Active Publication Date: 2021-02-02
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these technologies are all L3 detection technologies without exception. For the L2+L3 VPN bearer network, the L2 device side is required to support L3 interfaces and addresses. This requirement has brought many obstacles to the deployment of IP-based service end-to-end maintenance functions.
First of all, to complete the end-to-end L3 maintenance and diagnosis function of the L2+L3 VPN service path, additional configuration and occupation of an IP address is required, and the IP address needs to be in the same IP network segment as the IP address of the detected service (that is, the same network mask). This requirement cannot be met in many practical projects. For example, China Mobile typically plans a network segment with 64 IP addresses, 62 of which are used for base station services, and only 2 IP addresses are reserved for maintenance and diagnosis, which is far from satisfying business maintenance. Diagnosis requirements; secondly, the IP address configured on the L2 device end is only on the same network segment as the service IP instead of the same (if the same IP address is configured, there will be an IP address conflict problem), the result of maintenance and diagnosis based on this IP address cannot fully represent the actual business the real situation
Therefore, under the current mobile backhaul L2+L3 VPN network structure, the planning and configuration of the L3 address on the L2 device side affects the end-to-end maintenance and diagnosis of IP-based services

Method used

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  • A kind of L3 maintenance diagnosis method, device and system in L2 and L3 VPN
  • A kind of L3 maintenance diagnosis method, device and system in L2 and L3 VPN
  • A kind of L3 maintenance diagnosis method, device and system in L2 and L3 VPN

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] In this embodiment, an L2 device uses an L3 address to proxy an L3 interface to implement a Ping detection response.

[0056] Mobile backhaul networking such as Figure 5 As shown, the access layer is an L2 VPN network. For the end-to-end connectivity ping detection from the L2 VPN to the L3VPN for the mobile backhaul service, either the base station is pinged from the wireless core network side, or the base station is pinged from the L3 device where the L3 VPN is deployed. In this way, although the connectivity between the wireless base station and the wireless core network and the L3 VPN landing site can be detected, the connectivity between the L2 VPN access point device and the L3 VPN landing site cannot be detected.

[0057] In this embodiment, the L2 device adopts the L3 address of the wireless base station to implement the proxy wireless base station Ping response, and provides end-to-end connectivity detection between the L2VPN access point and the L3 VPN landin...

Embodiment 2

[0064] In this embodiment, an L2 device uses an L3 address to proxy an L3 interface to implement TWAMP performance measurement.

[0065] Mobile backhaul networking such as Figure 5 As shown, the access layer is an L2 VPN network. For the end-to-end L3 TWAMP performance measurement of the mobile backhaul service from the L2 VPN to the L3VPN, either the TWAMP measurement from the wireless core network to the base station is initiated, or the L3 device at the L3VPN landing point Initiate the TWAMP measurement to the base station. Although it can measure the L3 performance between the wireless base station, the wireless core network and the L3VPN landing site, it cannot measure the end-to-end L3 performance between the L2 VPN access point device and the L3 VPN landing site.

[0066] In this embodiment, the L2 device uses the L3 address of the wireless base station to implement the L3 TWAMP response, and provides end-to-end L3 performance measurement between the L2 VPN access poin...

Embodiment 3

[0073] This embodiment describes how the L2 device uses the L3 address to proxy the L3 interface to implement Y.1564 performance measurement.

[0074] Mobile backhaul networking such as Figure 5 As shown, the access layer is a L2 VPN network. For the end-to-end L3 Y.1564 performance measurement of the mobile backhaul service from the L2 VPN to the L3VPN, either initiate the Y.1564 measurement from the wireless core network side to the base station, or use the L3VPN The L3 device at the landing point initiates Y.1564 measurement to the base station. Although it can measure the L3 performance between the wireless base station, the wireless core network, and the L3VPN landing site, it cannot measure the end between the L2 VPN access point device and the L3 VPN landing site. End-to-end L3 performance.

[0075] In this embodiment, the L2 device uses the L3 address of the wireless base station to implement the L3 Y.1564 response, and provides end-to-end L3 performance measurement ...

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Abstract

The invention discloses a method, device and system for L3 maintenance and diagnosis in a two-layer (L2) and three-layer (L3) virtual private network (VPN), including: the L2 device adopts the L3 address of the corresponding L3 interface, and adopts the L3 interface The L3 address proxies the L3 interface to perform L3 maintenance diagnostics. The L3 maintenance and diagnosis method, device and system in the L2 and L3 VPN disclosed by the present invention can realize the L2 equipment in the L2+L3 VPN carrying the mobile backhaul service to conveniently support the L3 maintenance and diagnosis.

Description

technical field [0001] The present invention relates to packet transmission network (PTN, Packet Transport Network), relate in particular to a kind of two-layer (L2, Layer2) and three-layer (L3, Layer 3) L3 maintenance diagnosis method in the virtual private network (VPN, Virtual Private Network), devices and systems. Background technique [0002] With the development of mobile service network protocol (IP, Internet Protocol) and the demand for long-term evolution (LTE, Long Term Evolution) service bearer, mobile backhaul (Mobile Backhaul) has higher and higher requirements for the bearer network. The core layer of the network introduces three-layer (L3, Layer 3) scheduling, while the access network still adopts a simple two-layer (L2, Layer 2) network, forming a unique L2+L3 virtual private network (VPN, Virtual Private Network) A bearer structure, wherein, L3 is the network layer of the Open System Interconnection (OSI, Open System Interconnection) network model, and L2 i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/26H04L12/24H04L12/46
CPCH04L2012/4629H04L12/4641H04L12/4675H04L2101/668H04L61/103H04L61/5007H04L2101/622
Inventor 刘爱华
Owner ZTE CORP
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