A method for automatically establishing 4over6 tunnels based on arp proxy

A technology of ARP proxy and establishment method, which is applied in the field of automatic establishment of 4over6 tunnel based on ARP proxy, and can solve problems such as complex end systems and simple core network functions

Active Publication Date: 2017-02-08
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This feature makes the core network functions simple, while the end system is relatively complex

Method used

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  • A method for automatically establishing 4over6 tunnels based on arp proxy
  • A method for automatically establishing 4over6 tunnels based on arp proxy
  • A method for automatically establishing 4over6 tunnels based on arp proxy

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Embodiment Construction

[0050] The implementation of the present invention will be described in detail below in conjunction with the drawings and examples.

[0051] The application scenarios targeted by the present invention are as figure 1 As shown, the access network is an IPv6 single-stack network, and the CPE is used as the tunnel initiation point to enable IPv4 terminal hosts to access the IPv4Internet through the 4over6 tunnel. The invention mainly relates to the process of DHCPv4over IPv6 and LCRA processing Router Option, the process of message interaction between hosts accessing the Internet and the process of message interaction between hosts. The three processes are described in detail below.

[0052] First, DHCPv4over IPv6 process, such as figure 2 Shown:

[0053] 1) The host broadcasts a DHCP Discover request;

[0054] 2) LCRA replaces the IPv4 header of the message with an IPv6 header after receiving it, the source address is the IPv6 address of the CPE, and the destination address...

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Abstract

A method for automatically establishing a 4over6 tunnel based on an ARP proxy, which combines the LCRA function with the CPE device, obtains the address information of the real gateway and binds it with the MAC address of the CPE, so that the CPE device enables the proxy ARP function. During the transitional period, the IPv6 single-stack network is used as the access network to obtain public IPv4 addresses across the IPv6 network without changing the existing IPv4 terminal hosts, and a 4over6 tunnel is established with the CPE router as the tunnel initiation point to access the IPv4Internet, realizing IPv6 Mutual visits between IPv4 hosts in a single-stack access network.

Description

technical field [0001] The invention belongs to the technical field of the Internet, in particular to a method for automatically establishing a 4over6 tunnel based on an ARP proxy. Background technique [0002] The current IPv4 Internet scale is expanding rapidly, and the demand for IPv4 addresses is also increasing, so that the global IPv4 addresses have been allocated in 2011. Although the use of NAT technology and private addresses achieves address reuse to a certain extent, it destroys the end-to-end feature and increases the complexity of the network structure. The IPv6 protocol has a larger address space (2 128 ), better addressing and routing features, and security have become important protocols for building the next-generation Internet. However, due to the incompatibility between IPv4 and IPv6 addressing routing, it will take a long time for the Internet to transition from IPv4 to IPv6. [0003] The end-to-end feature is an important feature of the IPv4 Internet....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L12/749H04L45/741
Inventor 崔勇孙琪刘聪张彬
Owner TSINGHUA UNIV
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