routing / subnets

Unanswered Question
Jan 28th, 2009
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Hi all. if I have 1 pc on the network and the other on the 10.112.1/24 network, will they be able to see each other, I would have thought that they would, but the pcon the /24 net would only see things on the same range, then it would stop.

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Overall Rating: 3 (1 ratings)
glen.grant Wed, 01/28/2009 - 07:47
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  • Purple, 4500 points or more /16 covers thru so they are both part of the same subnet . Why you would use a subnet I have no idea. The way you have it the subnets are overlapping.

Sherwin Clarke Thu, 01/29/2009 - 02:56
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One subnet is a subset of the other, but they are not the same subnets so you still need a routing device to route traffic between the two subnets

subnets overlapping indeed. Change subnet to

carl_townshend Thu, 01/29/2009 - 03:11
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In theory though if plugged in directly should they work?

Also , could you actually use the subnet, or would the first subent need to be ?

MUHAMMAD SHAHEEN Thu, 01/29/2009 - 03:58
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  • Silver, 250 points or more

Hi Carl,

Yes, you can use first subnet Between the PCs no problem at all using this 1st subnet. But when you configure this subnet on the Routers and Switches, you need to make sure you have "ip subnet-zero" configured to allow you to use this subnet. Now a days, Cisco enable this command as a default to make it work.

The important thing is you should not have an overlaping ranges between the 2 devices. It will partially work and hence cause confusions when troubleshooting any problems.

Hope this helps....


carl_townshend Fri, 02/06/2009 - 02:08
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can you tell me what you mean by partially work? do you mean only the part at which they overlap will work?




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