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Method and device for accessing external network

A network and purpose technology, applied in the field of access to the external network, can solve problems such as NAT function loss performance, and achieve the effects of improving user experience, improving data forwarding performance, and enriching service access types.

Inactive Publication Date: 2012-04-04
SHENZHEN GONGJIN ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in applications that require high performance in forwarding, the NAT function is very lossy in performance
[0004] At present, there is no relevant technical solution, which can avoid the NAT function while realizing the IP Unnumber technology to connect the internal network to the external network

Method used

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  • Method and device for accessing external network
  • Method and device for accessing external network
  • Method and device for accessing external network

Examples

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Embodiment Construction

[0013] The embodiment of the present invention provides a method and device for accessing an external network. Based on the IP Unnumber technology, the DHCP server end of the CPE assigns an internal network address to the LAN side device, and the LAN side device can be used without the NAT function. To access the external network, for ease of description, the external network in each embodiment of the present invention takes WAN as an example, and the internal network takes LAN as an example. The technical solutions realized by the implementation of the present invention include but are not limited to this example. see figure 1 , an embodiment of the method for accessing the external network in the embodiment of the present invention includes:

[0014] 101. The DHCP server of the CPE generates a new NAT rule according to the added destination port information and IP Unnumber address information;

[0015] Add destination port information and IP Unnumber address information to ...

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Abstract

The embodiment of the invention discloses a method and a device for accessing an external network, which are used for local area network (LAN) side equipment of a dynamic host configuration protocol (DHCP) server of customer premise equipment (CPE) to access an external wide area network (WAN) through an intranet address without a network address translation (NAT) function. The method disclosed by the embodiment of the invention comprises the following steps of: generating a new NAT rule according to target port information and internet protocol unnumber (IP-U) address information, wherein the target port information and the IP-U address information are added into a NAT rule; inquiring whether a port corresponding to the LAN side equipment starts an IP-U function or not according to a received request message sent by the LAN side equipment, if the port starts the IP-U function, allocating an IP address in an IP-U address pool to the LAN side equipment, otherwise, allocating an IP address on the same network segment with the IP address in the IP-U address pool to the LAN side equipment; and forwarding data messages from the LAN side equipment and WAN side equipment according to the new NAT rule and the distributed IP address.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for accessing an external network. Background technique [0002] In the usual point-to-point connection protocol (PPPoE, point-to-point protocol over ethernet) Internet service, the implementation of the gateway is to establish a PPPoE dial-up service on the customer premises equipment (CPE, Customer Premise Equipment) to obtain access to the external network. (such as a wide area network WAN) address, and assign an intranet address to the local area network (LAN, local area network) side through a Dynamic Host Configuration Protocol (DHCP, Dynamic Host Configuration Protocol) server, in order to enable intranet (such as a local area network) devices to To access the external network, a Network Address Translation (NAT, Network Address Translation) function needs to be implemented on the CPE. [0003] The Internet service provider (ISP, Internet Servic...

Claims

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Application Information

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IPC IPC(8): H04L29/12H04L12/28
Inventor 袁科朱余浩黄楚恩侯学营
Owner SHENZHEN GONGJIN ELECTRONICS CO LTD
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