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CGN broadband access gateway and implementation method thereof

A technology of a broadband access gateway and an implementation method, applied in the field of communication networks, can solve the problems of resource waste, CGN resources cannot be scheduled across boards, and there is no unified scheduling of CGN resources.

Active Publication Date: 2015-09-30
CHINA TELECOM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In addition, the broadband access gateway does not have unified scheduling of CGN resources, and CGN resources cannot be scheduled across boards, resulting in waste of resources

Method used

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  • CGN broadband access gateway and implementation method thereof
  • CGN broadband access gateway and implementation method thereof
  • CGN broadband access gateway and implementation method thereof

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Embodiment Construction

[0039] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0040] At the same time, it should be understood that, for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0041] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.

[0042] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the Authoriz...

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Abstract

The invention discloses a CGN(Carrier Grade Network Address Translation) broadband access gateway and an implementation method thereof. The implementation method includes that a main control board receives a traffic access request from a user, allocating a CGN boards carrying user traffic according to resource information of the CGN boards and leads traffic to the CGN board. The CGN board receives user traffic, creates an NAT session, adds the session to an NAT session list, performs traffic address translation and carries on transmission through an interface board. By adopting the gateway and the implementation method provided by the invention, unified management of broadband access network NAT sessions and trans-CGN board treatment of NAT traffic are realized and CGN redundant backup capability and utilization rate of the broadband access gateway are improved.

Description

technical field [0001] The invention relates to the technical field of communication networks, in particular to a broadband access gateway with a built-in CGN and an implementation method thereof. Background technique [0002] IPv4 addresses are becoming exhausted, and it is necessary to migrate to IPv6 addresses. Massive IPv4 services are carried on the Internet, and it is impossible for operators to completely discard IPv4 in a short period of time. There is a transition period between IPv4 and IPv6. How to gradually introduce IPv6 without affecting the existing IPv4 services is a key issue for operators. Carrier Grade Network Address Translation (CGN, Carrier Grade Network Address Translation) is a key IPv6 transition technology and a solution for converting IPv4 private addresses to IPv4 public addresses under dual-stack conditions. [0003] In the operator's network, the broadband access gateway is at the network access control layer, mainly responsible for service ac...

Claims

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Application Information

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IPC IPC(8): H04L12/66H04L29/12
Inventor 朱永庆陈华南金华敏邹洁阮科陆立
Owner CHINA TELECOM CORP LTD
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