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System and method for interconnecting openflow network and conventional Internet protocol (IP) network

An IP network and network technology, applied in the field of network communication, to achieve the effect of interconnection

Inactive Publication Date: 2012-07-04
BEIJING UNIV OF POSTS & TELECOMM
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  • Description
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Problems solved by technology

[0014] The technical problem to be solved by the present invention is to invent a system and method in a mixed environment of an openflow network and an existing IP network to solve the problem of interconnection between an openflow network and an IP network

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  • System and method for interconnecting openflow network and conventional Internet protocol (IP) network
  • System and method for interconnecting openflow network and conventional Internet protocol (IP) network

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Embodiment Construction

[0042] The openflow network proposed by the invention is interconnected with the existing IP network system. The system includes two parts: a control subsystem and a forwarding subsystem; the control subsystem includes: an openflow network operating system, several system components, routing components and several Other expansion components; the forwarding subsystem includes: an edge switching unit and an internal switching unit. Such as Figure 6 .

[0043] The forwarding subsystem is composed of two types of logical units, the edge switching unit and the internal switching unit. Both the edge switching unit and the internal switching unit are physically implemented as openflow switches, but due to their different positions in the network, they are divided into different logical units in the system of the present invention. Each switching unit and the control subsystem are connected through a dedicated data channel, and the dedicated data channel can be a dedicated private ...

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Abstract

The invention discloses a system and a method for interconnecting an openflow network and the conventional Internet protocol (IP) network. The method is characterized in that: the whole openflow network is abstracted into a router in the conventional IP network, under the control of a control subsystem, the whole openflow network acts as a standard router externally, and the control subsystem is mapped to a routing processing part of the standard router; a forwarding subsystem is mapped to be a data forwarding part of the standard router; and an edge interface of an edge exchange unit is mapped to be an interface of the standard router. According to the method, a system provided with the openflow network can be regarded as a router on the Internet, so the openflow network can be well integrated into the routing system of the whole Internet, and data packets pass through the openflow network just like passing through a hop standard router, so that interconnection between the openflow network and the conventional IP network is realized.

Description

technical field [0001] The invention belongs to the technical field of network communication, and relates to a system and a method for interconnection between an openflow network and an existing IP network. Background technique [0002] In existing openflow research projects, such as GENI and Stanford's openflow experimental network, the interconnection between different openflow subnets mainly uses the second-layer technology. Optional solutions include: Layer 2 tunneling technology, VLAN translation technology, direct optical fiber connection technology, etc. GENI also provides some solutions for layer-3 network connection, such as: layer-3 tunnel technology and MPLS technology. However, due to the lack of processing of network-layer routing protocols, these solutions can only be two-layer intercommunication between openflow networks, and geographically distributed subnets logically belong to the same local area network. [0003] The existing openflow network controller ...

Claims

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Application Information

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IPC IPC(8): H04L12/46H04L12/56H04L29/12H04L12/701
Inventor 龚向阳王文东阙喜戎王楠李鹏飞
Owner BEIJING UNIV OF POSTS & TELECOMM
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