| Author |
These IP's on the same subnet?
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| aznluvsmc 2004-01-07, 3:59 pm |
| Just need a little help figuring this question out.
Please refer to the chart:
CompA IP: 172.16.31.101 SM: 255.255.252.0
CompB IP: 172.16.40.1 SM: 255.255.252.0
My calculation is that these computers belong to separate subnets but my book says they are on the same subnet. According to my calculations using a subnet mask of 252 in the third octet would dictate that the incremental value of each subnet is 4. This would mean that we have 62 usable subnets with the following IP ranges:
172.16.4.0
172.16.8.0
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172.16.24.0
172.16.28.0
172.16.32.0
172.16.40.0
Did I make a mistake somewhere? | |
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| They are on different subnets.
172.16.31.101 is on the .28 network.
172.16.40.1 is on the .40 network.
Your host ranges are:
172.16.28.1 - 172.16.31.254 (for the .28 network)
172.16.40.1 - 172.16.43.254 (for the .40 network)
Looks like you've got it to me. Good job!  | |
| aznluvsmc 2004-01-08, 12:14 pm |
| Thanks Spid!  | |
| Joe_fh 2004-01-21, 9:03 am |
| Why would the incremental value of each subnet be 4? | |
| aznluvsmc 2004-01-21, 9:35 am |
| The incremental value is 4 because 256-252=4. The formula to find the incremental value is 256 - subnet mask. | |
| Joe_fh 2004-01-21, 10:26 am |
| Ok. I see. Thanks. |
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