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NAT (Network Address Translation) converting method and equipment

A technology for switching equipment and equipment, applied in the field of network communication, can solve problems such as uncertain downstream path of traffic, unfavorable traffic monitoring, management anti-attack, inconsistent uplink and downlink paths of three-layer traffic, etc., and achieve the effect of dynamic adjustment

Active Publication Date: 2013-01-23
XINHUASAN INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

exist figure 2 In the shown network, there is also the problem of inconsistency between the uplink and downlink paths of Layer 3 traffic, and the unfavorable traffic monitoring, management and attack prevention problems caused by the uncertain downlink path of traffic.

Method used

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  • NAT (Network Address Translation) converting method and equipment
  • NAT (Network Address Translation) converting method and equipment
  • NAT (Network Address Translation) converting method and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] This embodiment is based on figure 1 The network shown is mainly improved in the following two aspects:

[0078] On the one hand, the core switches of data center A and data center B are used as independent gateway devices, and the VRRP protocol is deployed as a gateway to perform priority layer-3 termination on the uplink layer-3 traffic in the data center, thereby realizing multi-active VRRP gateways and The traffic between the server and the external network realizes preferential local Layer 3 termination, avoiding the transmission of traffic between the server and the external network across intermediate links.

[0079] On the other hand, the core switches of data center A and data center B also deploy the NAT function, and release IP addresses of different network segments to the public network as their respective routing addresses, and at the same time, deploy IP address translation for the server addresses in this data center , that is: when forwarding the messa...

Embodiment 2

[0082] This embodiment is based on figure 2 The network shown is mainly improved in the following two aspects:

[0083] On the one hand, the aggregation switches in data center A and data center B provide the gateway function, deploy VRRP protocol as the gateway, and perform priority layer-3 termination on the uplink layer-3 traffic in the data center, thus realizing multi-active VRRP gateways, and server and server The traffic between the external network realizes the preferential local Layer 3 termination, which avoids the transmission of the traffic between the server and the external network across the intermediate link.

[0084] On the other hand, the aggregation switches of data center A and data center B also deploy the NAT function, and release the IP addresses of different network segments to the public network as their respective routing addresses, and at the same time, deploy IP address translation for the server addresses in this data center , that is: when forwa...

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PUM

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Abstract

The invention provides a NAT (Network Address Translation) converting method and equipment, which are applied on occasions in which a plurality of regions are mutually connected and a local gateway preferentially ends the flow rate of a local terminal for three layers, the gateways in the mutually connected regions are allocated with NAT functions for respectively issuing IP addresses of different network segments to a public network as respective route addresses; and the source IP address of the message sent by the local terminal to the public network is amended to a corresponding route address, and the message is sent to the public network. Therefore, the message from the public network can be routed to corresponding gateway according to the IP addresses of different network segments to solve the problem that the uplink and downlink paths of three layers of flow rates are not uniform under the current scene in which a plurality of regions are mutually connected and the local gateway preferentially ends the flow rate of the local terminal for three layers.

Description

technical field [0001] The present application relates to network communication technology, in particular to a NAT conversion method and equipment. Background technique [0002] At present, data centers in the industry are often not located in one place, but data centers in multiple places are interconnected through the second layer. At this time, the servers in the data center are exchanged through Layer 2, while access to the public network is generally accessed through Layer 3. [0003] Since the data center is a Layer 2 network that has been interconnected, in traditional technology, it is often negotiated or configured through a protocol such as VRRP (Virtual Router Redundancy Protocol, Virtual Router Redundancy Protocol) as a Layer 3 gateway. The Layer 3 traffic of the data center goes out from the gateway of the data center, and the access traffic of the public network also enters through the gateway of the data center and is forwarded to the corresponding data cente...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/12H04L12/801
Inventor 郑国良孙中良
Owner XINHUASAN INFORMATION TECH CO LTD