Conflicts of Subnet Zero usage

Unanswered Question
May 30th, 2007

I have read several writings on the use of subnet zero. I have read that the subnet zero and broadcast are usable and then I read the opposite.

What is Cisco's take on this in their exam. I don't believe asking or answering violates any exam question. I just want to know what Cisco will consider correct.

Can anyone clarify and why so many different takes on this?



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Richard Burts Thu, 05/31/2007 - 03:17


The debate about subnet zero is quite old at this point and has been pretty well settled with acceptance that subnet zero is valid for use. I suspect that if you check the places that you read which indicate that subnet zero is restricted that you will find that they are pretty old material.

While I can not speak for Cisco and do not know details of how they grade exams, I am quite confident that the current position of Cisco is that subnet zero is fully supported.




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