Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method, system, Openflow switch and server for realizing message forwarding based on SDN

A message forwarding and switching technology, applied in transmission systems, hybrid switching systems, digital transmission systems, etc., can solve problems such as increasing the load of SDN controllers, serious IP address semantic overload, and increasing the difficulty of network supervision

Active Publication Date: 2015-07-22
ZTE CORP
View PDF8 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, when the location of the host moves, the IP address of the host changes, and the SDN controller needs to recalculate the route. The change of the route will cause the terminal network service to be interrupted. At the same time, the identity of the communication terminal host also changes, which adds to the Increased the difficulty of network supervision for message forwarding based on identity identification
[0004] To sum up, at present, SDN uses IP addresses as the location identifier of the network layer and the identity identifier of the transport layer, which makes the problem of semantic overload of IP addresses increasingly serious.
In addition, when the host moves frequently, the IP address changes frequently, which not only increases the load on the SDN controller, but also affects the network supervision of packet forwarding based on the identity

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
  • Method, system, Openflow switch and server for realizing message forwarding based on SDN
  • Method, system, Openflow switch and server for realizing message forwarding based on SDN
  • Method, system, Openflow switch and server for realizing message forwarding based on SDN

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0232] Figure 4 It is a flowchart of a method for implementing user login based on SDN in Embodiment 1 of the present invention, as shown in Figure 4 shown, including:

[0233] In step 400, the UE accesses the Openflow switch, logs in, and sends a user identifier.

[0234] Step 401, the Openflow switch sends the user identifier, the Openflow location identifier, and the port number.

[0235] It should be noted that the allocation and processing of the port numbers here is a common technical means of those skilled in the art. I won't repeat them here.

[0236] Step 402, the SDN controller sends the user identifier and location identifier sent by the Openflow switch.

[0237] Step 403: According to the user identifier, assign a corresponding ID to the terminal, and generate mapping flow table information of the ID and the location ID.

[0238] Step 404, deliver the mapping flow table information, and record the delivered list.

Embodiment 2

[0240] Figure 5 It is a flow chart of the method for implementing message forwarding based on SDN in Embodiment 2 of the present invention, as Figure 5 shown, including:

[0241] Step 500, the source Openflow switch determines that the received packet is the user's packet according to the port information.

[0242] Step 501, the source Openflow switch searches the mapping flow table, and the destination ID matches the mapping flow table. When the destination ID matches the mapping flow table information, perform step 5020; if it does not match the mapping flow table information, perform step 5030.

[0243] Step 5020: Query the destination location identifier according to the destination identifier. When the destination location identifier is the location identifier of the source Openflow switch, execute step 5021; when the destination location identifier is not the location identifier of the source Openflow switch, execute step 5022.

[0244] Step 5021, the source Openflow...

Embodiment 3

[0257] Image 6 It is a flow chart of a method for implementing user offline based on SDN in Embodiment 3 of the present invention, as shown in Image 6 shown, including:

[0258] Step 600, the user is offline, and it is detected that the port is down.

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

Disclosed are an SDN-based packet forwarding method and system, Openflow switches and a server. The method comprises: a source Openflow switch determining, according to port information, that a received data packet is a packet of a user; when a destination identity in the packet hits a mapping flowtable, obtaining a destination location identifier corresponding to the destination identity from the mapping flowtable; when the obtained destination location identifier is a location identifier of the source Openflow switch, sending the packet to a destination user according to port information corresponding to the destination identity; otherwise, encapsulating and sending the packet to a destination Openflow switch corresponding to the destination location identifier, and decapsulating the packet in the destination Openflow switch, so as to send the packet to the destination user according to port information of the destination user.

Description

technical field [0001] The invention relates to the field of software-defined network (SDN), in particular to a method, system, Openflow switch and server for realizing message forwarding based on SDN. Background technique [0002] Software Defined Network (SDN for short) is a new network innovation architecture, which is a revolution for existing network equipment and architecture. The architecture concept of SDN is to separate the forwarding and control of network devices, adopt a centralized SDN controller to control the network through the Openflow protocol, and provide network virtualization functions and application programming interfaces on the SDN controller to facilitate network innovation. figure 1 It is a schematic diagram of the SDN architecture of the prior art, such as figure 1 As shown, the control functions included in the switches and routers in the network are implemented by the SDN controller; the forwarding functions in the switches and routers in the ne...

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): H04L12/801
CPCH04L45/38H04L45/64H04L12/6418
Inventor 滕荟芸颜正清
Owner ZTE CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com