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A method for mobility management based on openflow protocol

An openflow protocol and mobility technology, applied in the field of mobility management, can solve problems such as the route of data packets from the source address to the destination address is not the best path, tunnel state maintenance, and increase the workload of the mobile node MN router, etc., to achieve effective Mobility management, avoiding additional costs, convenient and flexible management

Inactive Publication Date: 2020-01-10
NAT COMP NETWORK & INFORMATION SECURITY MANAGEMENT CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This brings problems such as triangular routing and tunnel status maintenance.
[0014] The triangular routing problem means that the data packets sent to the mobile node MN must be forwarded by the home agent or MAG, which increases the workload of the router where the home agent of the mobile node MN or MAG is located, and at the same time makes the data packet from the source address to the destination address The route is not the best path; the tunnel between communicating entities needs to maintain state information regularly, and it must be dismantled when necessary

Method used

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  • A method for mobility management based on openflow protocol
  • A method for mobility management based on openflow protocol

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Embodiment 1

[0054] A method for mobility management based on the OpenFlow protocol, comprising:

[0055] Step 1) the controller Controller maintains a record with a plurality of OpenFlow switches with the AP function corresponding to the port numbers connected to each gateway;

[0056] Step 2) receiving the report information of the first OpenFlow switch that contains the identification information of the mobile node MN and the first OpenFlow switch attached to the mobile node MN by the first OpenFlow switch with the AP function, the identification information of the mobile node MN is the MAC address of the mobile node and / or IP address;

[0057] Step 3) Check the correspondence table according to the reported information, and perform different routing behaviors based on the query result of the identification information of the mobile node MN and the reported information of the first OpenFlow switch to which the mobile node MN is attached.

[0058] Preferably, further comprising:

[0...

Embodiment 2

[0083]The OpenFlow protocol is one of the basic protocols of Software Defined Networking (SDN). The communication between the controller and the OpenFlow switch should follow the OpenFlow protocol.

[0084] And, in order to make the OpenFlow switch with AP function report the information of the mobile node MN to the controller, in the embodiment of the present invention, a new message field is defined on the basis of the existing OpenFlow protocol message format:

[0085] Specifically, under the OpenFlow protocol version 1.0, in the Vendor message, a 6-byte 6 new field MN's MAC is defined to store the identification information of the mobile node MN; the Vendor message is sent to the controller by the OpenFlow switch with the AP function Controller, Vendor message structure is as follows:

[0086] header vendor MN's MAC

[0087] Specifically, under the OpenFlow protocol version 1.3, a 6-byte new field MN's MAC is defined in the Experimenter message to store...

Embodiment 3

[0106] The intra-domain mobility management workflow is as follows:

[0107] When the OpenFlow switch with the AP function senses the attachment of the MN, it will actively report the identification information (MAC address, IP address, etc.) of the MN and the AP to which the MN is attached to the controller. If it is detected that the mobile node does not have an IP address, it needs to obtain an IP address through the DHCP function of the controller.

[0108] The controller records the corresponding relationship between the OpenFlow switch with the AP function and the port number of the OpenFlow switch with the AP function connected to each gateway. When the controller assigns an IP address to the mobile node MN, according to the IP address of the mobile node MN address, the OpenFlow switch with AP function and the corresponding relationship of the port number of the OpenFlow switch with AP function connected to each gateway, add a flow table to the mobile node MN in the gat...

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Abstract

The invention discloses a method for mobility management based on the OpenFlow protocol, comprising: step 1) the controller maintains a table recording the correspondence between a plurality of OpenFlow switches with AP functions and the port numbers connected to each gateway; Step 2) receiving the report information of the first OpenFlow switch that contains the identification information of the mobile node MN and the first OpenFlow switch attached to the mobile node MN by the first OpenFlow switch with the AP function, the identification information of the mobile node MN is the MAC address of the mobile node and / or IP address; step 3) check the correspondence table according to the reported information, and based on the query result of the reported information of the identification information of the mobile node MN, the first OpenFlow switch attached to the mobile node MN to perform different Routing behavior.

Description

technical field [0001] The invention discloses a method and device for mobility management based on the OpenFlow protocol, belonging to the technical field of mobile communication. Background technique [0002] Mobile IP is designed to satisfy mobile nodes (MN, Mobile Node) to maintain their connectivity while moving. Mobile IP now has two versions, namely Mobile IPv4 and Mobile IPv6. [0003] Software-defined networking (SDN, Software-defined networking) is a network virtualization (Network virtualization) technology. The OpenFlow protocol is used to separate the control plane (control plane) of the router from the data plane (data plane) and realize it in software. This architecture allows network administrators to re-plan the network with a central control method without changing the hardware device. It provides a new method for controlling network traffic and provides a good platform for core network and application innovation. . [0004] OpenFlow technology was firs...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/757H04L12/46H04L29/12
Inventor 唐积强邹潇湘赵钦黄小红高志腾王悦高昕姚珊曹凯
Owner NAT COMP NETWORK & INFORMATION SECURITY MANAGEMENT CENT
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