Method for avoiding message recombination in 4over6 tunnel and system therefor
A tunnel and message technology, applied in the Internet field to achieve the effect of improving performance
Inactive Publication Date: 2010-02-03
BEIJING NORMAL UNIVERSITY
View PDF0 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The above-mentioned characteristics of the tunneling technology bring about a problem: how to implement the MTU (Maximum Transmission Unit, maximum transmission unit) mechanism in the network transmission path including the tunnel
However, the tunnel MTU mechanism in the prior art does not solve the above problems
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0020] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0021] A flowchart of a method for avoiding message reassembly in a 4over6 tunnel according to an embodiment of the present invention, as shown in figure 2 Shown:
[0022] Step S301, when the sending host sends the original message to the tunnel entry router, the tunnel entry router receives the IPv4 message, and judges whether the IPv4 message needs to be tunnel-encapsulated by looking up the IPv4 routing table, if so, execute step S302, otherwise, search The IPv4 routing table forwards IPv4 packets;
[0023] Step S302, the tunnel entry router obtains the encapsulation tunnel of the IPv4 message, the encapsulation type corresponding to the encapsulation tunnel, the sou...
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
Login to View More Abstract
The invention discloses a method for avoiding message recombination in a 4over6 tunnel and a system therefor. The method comprises: a tunnel entrance router can be used for looking up a routing tableaccording to the destination address of the tunnel, so as to acquire an outgoing interface of the message; the tunnel entrance router also can search a tunnel path maximum transmission unit PM tunnelaccording to the destination address of the tunnel and the outgoing interface, and obtain the tunnel encapsulation length L t-head at the same time according to the encapsulation type; then, whether the length of the message is more than maximum sharding length PM tunnel-L t-head is judged; if yes, sharding is carried out on the message according to the maximum sharding length PM tunnel-L t-head,and tunnel encapsulation is carried out on each sharding; if not, tunnel encapsulation is directly carried out on the message, an IPv6 routing table is looked up, and the message is transmitted afterthe tunnel encapsulation. The invention can avoid message sharding and recombination in the 4over6 tunnel by sharding the original message to lead the length of the tunnel message entering the tunnelencapsulation to be small enough, and the experiment proves that the technical scheme of the invention can greatly improve the performance of tunnel communication.
Description
technical field [0001] The present invention relates to the Internet technology, and further relates to the field of tunnel technology, in particular to a method and system for avoiding message reassembly in a 4over6 tunnel. Background technique [0002] Tunnel technology has been widely used in the Internet, the existing tunnel types include: 4over6 (IPv4over IPv6) tunnel, 6over4 (IPv6over IPv4) tunnel, GRE (General Routing Encapsulation, general routing encapsulation) tunnel and L2TP (Layer TwoTunneling Protocol, the second layer tunnel protocol) tunnel, etc. Regardless of the type of tunnel, it has two important features: 1) It contains two end-to-end communications for the original message and the tunnel message; 2) There is an encapsulation operation at the entrance of the tunnel, and a corresponding decapsulation operation at the exit of the tunnel . The above-mentioned characteristics of the tunnel technology bring about a problem: how to implement the MTU (Maximum ...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L12/46H04L47/43
Inventor 肖融孙波于乐军肖永康何珺
Owner BEIJING NORMAL UNIVERSITY