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Webcast-Catalyst9k
New Member

How many subnets can I have on a Router ?

Hi i am studying for the CCNA exam. Can you only have a subnet per interface?

Or can you have multiple subnets on a single router.

Thanks

3 REPLIES
Hall of Fame Super Gold

Re: How many subnets can I have on a Router ?

Leon

I seem to have fatfingered this one. See my next response.

HTH

Rick

Hall of Fame Super Gold

Re: How many subnets can I have on a Router ?

Leon

You certainly may have multiple subnets on a single router. You may have multiple subnets on a single interface. If your router interface is connected to a trunk port on a switch (you would be doing intervlan routing on the router for the switch) you would configure multiple subinterfaces on the interface, each subinterface would be for one of the VLANs on the switch and each subinterface would be a separate subnet. Or if the router was not connected to a switch trunk then you could configure 1 primary subnet and could configure multiple secondary subnets using the secondary address feature.

HTH

Rick

New Member

Re: How many subnets can I have on a Router ?

Thanks. mmm all still abit new to me at the moment.

Also do you know any good sites that I can use for IOS Emulation. To practise on?

I dont own a router or swtich at the moment.

Thanks

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