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L2 and L3 VPN L3 maintenance and diagnosis method, device and system

A diagnosis method and a diagnosis system technology, applied in the field of packet transmission network, can solve problems such as maintenance function deployment obstacles, IP address conflicts, failure to meet business maintenance and diagnosis, and achieve the effect of solving business path segmentation and simplifying configuration

Active Publication Date: 2017-04-05
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 L2+L3VPN bearer networks, L2 devices are 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+L3VPN service path, an additional IP address needs to be configured and occupied, 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). The requirements cannot be met in many practical projects. For example, China Mobile typically plans 62 of a network segment with 64 IP addresses for base station services, and only 2 IP addresses are reserved for maintenance and diagnosis, which is far from meeting service maintenance and diagnosis. Second, the IP address configured on the L2 device 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), and the result of maintenance and diagnosis based on this IP address cannot fully represent the actual business. reality
Therefore, under the current mobile backhaul L2+L3VPN 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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  • L2 and L3 VPN L3 maintenance and diagnosis method, device and system

Examples

Experimental program
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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 L2VPN network. For the end-to-end connectivity ping detection from L2VPN to L3VPN for mobile backhaul services, you must either ping the base station from the wireless core network side, or ping the base station from the L3 device where the L3VPN is deployed. Detect the connectivity between the wireless base station and the wireless core network and the L3VPN landing site, but cannot detect the connectivity between the L2VPN access point device and the L3VPN landing site.

[0057] In this embodiment, the L2 device uses the L3 address of the wireless base station to implement the Ping response of the wireless base station on behalf of the wireless base station, and provides end-to-end connectivity detection between the L2VPN access point and the L3VPN landing site. The ...

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 L2VPN network. For the end-to-end L3TWAMP performance measurement of the mobile backhaul service from L2VPN to L3VPN, either the TWAMP measurement is initiated from the wireless core network side to the base station, or the L3 device at the L3VPN landing point is initiated to the base station. TWAMP measurement, so although the L3 performance between the wireless base station and the wireless core network and the L3VPN landing site can be measured, it cannot measure the end-to-end L3 performance between the L2VPN access point device and the L3VPN landing site.

[0066] In this embodiment, the L2 device uses the L3 address of the wireless base station to implement the L3TWAMP response, and provides end-to-end L3 performance measurement between the L2VPN access point ...

Embodiment 3

[0073] In this embodiment, an L2 device uses an L3 address to proxy an L3 interface to implement Y.1564 performance measurement.

[0074] Mobile backhaul networking such as Figure 5 As shown, the access layer is an L2VPN network. For the end-to-end L3Y.1564 performance measurement of mobile backhaul services from L2VPN to L3VPN, either the Y.1564 measurement is initiated from the wireless core network side to the base station, or the L3VPN landing point L3 The device 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-to-end L3 performance between the L2VPN access point device and the L3VPN landing site.

[0075] In this embodiment, the L2 device uses the L3 address of the wireless base station to implement the L3Y.1564 response, and provides end-to-end L3 performance measurement between the L2VPN access point and the L3V...

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Abstract

The invention discloses a L2 and L3 VPN (Virtual private network) L3 maintenance and diagnosis method, device and system. The method comprises the steps that L2 equipment uses the L3 address of a corresponding L3 interface and performs L3 maintenance and diagnosis by using the L3 address of the L3 interface on behalf of the L3 interface. According to the L2 and L3 VPN L3 maintenance and diagnosis method, device and system, the L2 equipment can conveniently support L3 maintenance and diagnosis in the L2+L3 VPN borne by a mobile back transmission service.

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, Layer 2) 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) ), where L3 is the network layer of the Open System Interconnection (OSI, Open System Interconnection) network model, and L2 is the link layer of...

Claims

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Application Information

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Patent Type & Authority Applications(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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