Message forwarding method, forwarding unit and network terminal equipment

A technology for forwarding equipment and messages, applied in the field of communication, can solve problems such as network security challenges, and achieve the effect of ensuring network security

Active Publication Date: 2009-11-04
CHENGDU HUAWEI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the convenient and direct intercommunication between

Method used

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  • Message forwarding method, forwarding unit and network terminal equipment
  • Message forwarding method, forwarding unit and network terminal equipment
  • Message forwarding method, forwarding unit and network terminal equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1, a message forwarding method in an IP network, the process can refer to figure 2 , including the steps:

[0035] 201. The forwarding device receives the double-layer IP packet sent by the source node.

[0036] The format of the double-layer IP message in this embodiment can refer to image 3 , wherein the outer layer header and the inner layer header respectively include an independent IP header IPo and IPi. It is easy to understand that besides the IP packet header, the packet headers of each layer may further include the transport layer protocol header, for example image 3 Transmission Control Protocol (TCP, Transmission Control Protocol) / User Datagram Protocol (UDP, User Datagram Protocol) header shown in . In addition, the inner message also includes the data Data that actually needs to be transmitted. The data Data is first encapsulated with an inner header to become an inner packet, and then the entire inner packet is used as data to encapsulate...

Embodiment 2

[0045] Embodiment 2. A message forwarding method in an IP network. The main difference between this embodiment and Embodiment 1 is that after receiving the double-layer IP message sent by the source node, the forwarding device carries Determine the VPN to which the received double-layer IP message belongs, and the rest of the steps are similar to those in Embodiment 1, and will not be repeated here.

[0046] The source node can place the VPN identifier in the double-layer IP message in various ways that can be recognized by the forwarding device. In this embodiment, a new message header is created, that is, a form of an additional message header is used to carry the VPN identifier. The format of the double-layer IP message in this embodiment can refer to Figure 4 , where the NH header is a new packet header created when encapsulating the outer packet header, and is used to carry information such as the VPN identifier.

[0047] In this embodiment, the forwarding device deter...

Embodiment 3

[0048] Embodiment 3, a message forwarding method in an IP network. The main difference between this embodiment and Embodiments 1 and 2 is that before forwarding a message, the global address of the source node and the private address are verified for matching. The process can refer to Figure 5 , including the steps:

[0049] 301. The forwarding device receives the double-layer IP packet sent by the source node.

[0050] 302. The forwarding device determines the VPN to which the received double-layer IP packet belongs.

[0051] For the details of the above two steps, reference may be made to Embodiment 1 or 2, and details are not repeated here.

[0052] 303. The forwarding device verifies whether the global address of the source node and the private address in the received double-layer IP packet match, and if they match, continue to perform subsequent operations, and if they do not match, end the processing.

[0053] After the VPN is determined, the forwarding device can se...

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PUM

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Abstract

The embodiment of the invention discloses a message forwarding method, a corresponding forwarding unit and network terminal equipment. The embodiment of the invention adopts the mode that based on the network message forwarding, a virtual private network is realized; nodes in the virtual private network needs the specific forwarding unit to forward the message so as to realize the intercommunication with each other, thus ensuring the network security of the virtual private network.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a message forwarding method, forwarding equipment and network terminal equipment. Background technique [0002] With the development of communication technologies, Internet Protocol (IP, Internet Protocol) networks are widely used. Nodes connected to the IP network are assigned corresponding IP addresses, and these nodes are connected together through various network devices (such as routers, switches, etc.) in the IP network. Nodes can communicate with each other by sending IP packets. For example, if the source node needs to send an IP packet to the destination node, write the IP address of the destination node as the destination address into the sent IP packet In the header, various devices in the IP network forward and route the IP packet to the corresponding destination node according to the destination address. Due to the convenient and direct intercommunication be...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L29/06H04L12/46
Inventor 刘利锋
Owner CHENGDU HUAWEI TECH
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