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GNS3 Network Simulation Guide by RedNectar Chris Welsh

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Introducing GNS3 generic switches

At some time you will need to connect multiple routers together, as you would on a physical Ethernet switch or a WAN switch such as a frame-relay or an ATM switch. You could use additional router nodes to perform these functions, but in an effort to provide this functionality with much less resource usage, Dynamips (and hence GNS3) created its own range of virtual devices that do an excellent job of providing virtual connections between devices.

This section will show you not only how to add a generic Ethernet switch, but also how to add additional interfaces to your routers using two different methods —manual and automatic.

Ethernet switch

Probably the most useful of these switches will be the Ethernet switch. You ...

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