Broadcast Domain Design

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Jun 9th, 2008
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Anyone know the recommended size (number of hosts) or limit for a broadcast domain?

Documentation much preferred.

Thanks in advance,


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Collin Clark Mon, 06/09/2008 - 07:03
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I don't know of any official documentation, but typically 250 hosts is the maximum for Windows ( you can go higher with Linux). This is also keeps subnetting at a minimum and helps in overall IP design as well.

Hope that helps.

cowetacoit Mon, 06/09/2008 - 07:04
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The smaller the better! /24 is probably the maximum number of IP's you would want on a given subnet. Tue, 06/10/2008 - 05:55
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This is a very good question.

The number of hosts in a subnet depends on many considerations you have to do in planning and designing a network.

Among these considerations there is a security issue: if you want, for example, segment hosts in VLAN and then create different broadcast domains. But the main consideration is:" What applications and operation systems you have?". If you have the possibility, use a network analyzer in order to determine the broadcast traffic. If this is high possibly reduce the subnet hosts.

I hope this helps.

Best regards.



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