Linux for Routing and routing forwarding

I. Introduction to the Environment

Version 1.linux: CentOS6.8, CentOS7.2 two hosts load two NICs, respectively, as two ports 2 of the router. Experiment completed in VMware Virtual Machine 3. There are two CentOS6.8 and CentOS7.2 as host two for 4 segments. Experiment Diagram:

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Two, routing 1 (left) and Routing 2 (right) settings

1. Routing 1 Configuration Information

Eth0 network card: Device=eth0 ipaddr=10.0.0.1 prefix=9eth1 network card: device=eth1 ipaddr=192.168.0.1 prefix=22

Icon:

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Eth0 network card: Device=eth0 ipaddr=10.0.0.2 prefix=9eth1 network card: device=eth1 ipaddr=172.16.0.1 prefix=23

Icon:

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3. Restart the network service and turn on the route forwarding function

This is a temporary start, if you want to permanently start the route forwarding feature you need to write to the/etc/sysctl.conf file to include: ipv_ipforward=1

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4. Setting the Routing gateway Information   650) this.width=650; style= border-top: #ddd 1px solid ; Border-right: #ddd 1px solid;background:url ("/e/u261/lang/zh-cn/images/localimage.png") no-repeat Center; Border-bottom: #ddd 1px solid;border-left: #ddd 1px solid; "alt=" image "src="/e/u261/themes/default/images/spacer.gif " />650) this.width=650, "style=" Border-top: #ddd 1px solid;border-right: #ddd 1px solid;background:url ("/e/u261/lang /zh-cn/images/localimage.png ") no-repeat center;border-bottom: #ddd 1px solid;border-left: #ddd 1px solid;" alt= "image" Src= "/e/u261/themes/default/images/spacer.gif"/>

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Third, host settings

1. Left host network configuration and start

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2. Right-side Host network configuration and startup

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Linux for Routing and routing forwarding