How to setup IP range address's

[yorgi]

Hi
I would like to know how to make an ip range for these address's

192.168.1.90- 192.168.1.99
192.168.1.80 - 192.168.1.89

I keep seeing stuff like 192.168.1.1/30 and I have seen it explained but it still doesn't make any sense to me.

any help would be greatly appreciated

 

[Cloud200]

http://www.subnet-calculator.com/cidr.php

That is a subnet calculator.
input the ranges you want and move the mask back and forth
Not all ranges are valid.

The reason is you are going from binary to decimal so until you start learning binary it wont make much sense.

 

[coxhaus]

I think a mask of /29 or /28 will come close but not match exactly. A mask of /29 which is 255.255.255.248 will allow for 6 hosts. A mask of /28 which is 255.255.255.240 will allow for 14 hosts. Remember all networks lose 2 IP addresses, one for the network IP address and one for the broadcast IP address. So a /29 will use 8 IP addresses and a /28 will use 16 IP addresses.