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Solving a subnetting problem?
I was given the following problem below to figure out a IP addressing scheme.
Create an IP address scheme that will accommodate 400 devices divided into 5 segments.
can't I just use a subnet mask of 255.255.255.0 and have subnets 192.168.1.x through 192.168.5.x with x being any host from 1 to 254?
Everything I see about subnets talks about subnetting a range of addresses that you have been given already. What if I am not given a range? Can I just use my above example in a private network?
2 Answers
- Anonymous9 years agoFavorite Answer
Almost seems like a trick question. You could certainly use an address-range of 192.168.0.0/24, and then put 80 hosts on each of 192.168.1.x, 192.168.2.x, 192.168.3.x, etc. Each of those 5 groups would be a different network segment. In this case make sure none of the devices has a host address of either 0 or 255, or you'll run into trouble.
Keep in mind that the 16-bit private address range is technically 192.168.0.0/16, not /24. However this is one of the big advantages of CIDR - it lets you organize your netmasks more efficiently. Since you won't need more than 80 addresses per segment, you can go with a 24-bit netmask instead of a 16-bit one.
BTW Get comfortable with CIDR notation, which is what I've shown above - e.g. 192.168.0.0/24. All it is, is putting your netmask (expressed as a number from 0 to 32) after your dotted-decimal network range, separated by a forward slash.
- 9 years ago
Here are some sites to learn and practice subnetting:
