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Message forwarding method and apparatus, and distributed device

A distributed device and packet forwarding technology, applied in the field of network communication, which can solve the problems of ineffective NAT services and different traffic paths of NAT services.

Active Publication Date: 2021-02-12
MAIPU COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiment of the present application is to provide a message forwarding method and device, and distributed equipment to solve the technical problem that the NAT service cannot take effect due to the inconsistency of the NAT service traffic path

Method used

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  • Message forwarding method and apparatus, and distributed device
  • Message forwarding method and apparatus, and distributed device
  • Message forwarding method and apparatus, and distributed device

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Experimental program
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Embodiment Construction

[0024] Before introducing the message forwarding method provided by the embodiment of the present application, some concepts involved in the embodiment of the present application are first introduced. Some concepts involved in the embodiment of the present application are as follows:

[0025] Network Address Translation (NAT) refers to the technology of mutual conversion between Internet Protocol (IP) addresses on the intranet and addresses on the public network. This technology converts a large number of intranet IP addresses into one Or a small number of public IP addresses to reduce the occupation of public IP addresses.

[0026] A distributed device is a network device (such as a router, switch, firewall, etc.) under a distributed system architecture. The distributed equipment mainly includes the main control card and the service board, and the main control card and the service board are connected through the backplane. The main control board is mainly responsible for the...

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PUM

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Abstract

The invention provides a message forwarding method and apparatus, and a distributed device, the message forwarding method is applied to a service board card of the distributed device, and after one service board card receives a to-be-forwarded message sent by a destination device, if an NAT table entry matched with the to-be-forwarded message does not exist on the service board card, reverse routing search can be carried out according to the source IP address in the message to be forwarded, the outgoing interface corresponding to the source IP address is determined, and when the searched outgoing interface is inconsistent with the outgoing interface of the service board card, the message to be forwarded is forwarded to the service board card corresponding to the outgoing interface to be processed. Since the service board card corresponding to the found outbound interface has the corresponding NAT table entry, the problem that the NAT service cannot take effect can be solved.

Description

technical field [0001] The present application relates to the field of network communication, in particular, to a message forwarding method and device, and distributed equipment. Background technique [0002] In the field of network communication, customers have higher and higher requirements for the reliability of the basic network. However, in the prior art, in order to improve the reliability of the network, the networking environment is basically implemented in a dual-line or multi-line redundant manner, and most of the network equipment used in this manner are high-end distributed equipment (such as Distributed routers, etc.). Wherein, in order to further improve reliability, multiple network communication lines are often distributed on different service boards. [0003] However, in the above-mentioned reliable networking, the traffic forwarding path may be inconsistent, that is, when the NAT service traffic on the distributed device goes out from the outside interfac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/741H04L29/12H04L45/74
CPCH04L45/745H04L61/2503H04L61/2557
Inventor 张志刚
Owner MAIPU COMM TECH CO LTD