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Trouble With SubNets

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Name: David
Date: August 5, 2001 at 18:36:43 Pacific
Comment:

I was looking through some webpages on the internet. I am not sure if I completly understand. So i need clearification.
If I have a subnet of 255.255.255.0
The computers in that subnet would be able to communicate with each other.

What about the next segment of computers. Would that use 255.255.0.255? or what?


Thanks



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Response Number 1
Name: Chase
Date: August 5, 2001 at 18:44:58 Pacific
Reply:

No. the next subnet is still 255.255.255.0

What you're getting into is a bit beyond this forum, but I'll give you some basic info...

A network, 192.168.10.0, with a subnet or 255.255.255.0 has 254 valid addresses:
192.168.10.1 through 192.168.10.254
You can't count 192.168.10.0 because that's the network (or wire) address, and 192.168.10.255 is the broadcast address.

The next available network is 192.168.11.0, using the same subnet mask.

Further subnetting 192.168.10.0 will give you different masks (ex: 255.255.255.128) and then you'll have 2 networks, with the same mask. The first network:

Network Address: 192.168.10.0
Broadcast address: 192.168.10.127
Subnet mask: 255.255.255.128
Valid hosts: 192.168.10.1 to 192.168.10.126
...and...
Network Address: 192.168.10.128
Broadcast address: 192.168.10.255
Subnet mask: 255.255.255.128
Valid hosts: 192.168.10.129 to 192.168.10.254

This process is known as subnetting. If you're not familiar with it, it can be very confusing. Go to the tucows website, and download a subnet calculator. There are a couple out there, and they can give you different examples.

HTH,
Chase


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Response Number 2
Name: David
Date: August 5, 2001 at 20:00:42 Pacific
Reply:

Thank you for the clerifaction. I understand how it works now.

What is a broadcast address?


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Response Number 3
Name: Chase
Date: August 5, 2001 at 20:02:44 Pacific
Reply:

A broadcast address is an address that all hosts on the network hear. All hosts receive packets sent to that address.

Cheers!
Chase


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Response Number 4
Name: David
Date: August 6, 2001 at 08:07:58 Pacific
Reply:

What do you mean by 192.168.0.0 is a network address?


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Response Number 5
Name: TechieMan
Date: August 6, 2001 at 13:28:30 Pacific
Reply:

Here is a useful website that has some information on IP Addressing and subnetting that you all might find useful in clearly understanding the two:

Check out:

http://www.8wire.com/article_render/?aid=1556


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Response Number 6
Name: Chase
Date: August 7, 2001 at 03:57:40 Pacific
Reply:

David,

I didn't say that 192.168.0.0 was a network address. Read it again.

I DID say that this was beyond the scope of this forum :)

Have a look at the web site, and see if that clarifies things for you.

Cheers!
Chase


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