Say you have a class C network of 192.168.1.0/24 which has 254 usable host addresses, because 192.168.1.0 and 192.168.1.255 are not usable (2^8-2).
By changing the CIDR suffix to 25 , you create two networks:
and
The first has 126 usable host addresses (192.168.1.{1..126}, 2^7-2)
The second has 126 usable host addresses (192.168.1.{129..254}), 2^7-2)
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The subnet mask of the /24 network is 255.255.255.0
The subnet mask of the two /25 networks is 255.255.255.128
This User Gave Thanks to Scrutinizer For This Post:
We have subnetted our Internal Network. We used an I.P. range of 172.16.16.0-254, 172.16.17.0-254, 172.16.18.0-254, 172.16.19.0-254 and mask 255.255.252.0. We created a subnet range of 172.16.10.0-254 and maske 255.255.255.0. Our routers are configure to route to approprate network. We are able... (2 Replies)
As seen on Digg.com, here is my ip addressing article in full...
Original Subnetting in 11 Steps article
Subnetting in 11 Steps
There are a few things that you will need to know first. I personally use 11 rules that I learned from Mike Vana. Below you will find the 11 rules as well as... (1 Reply)
Guys,
Anyone could help me understand subnetting. I know a bit in networking but there are things that I don't get them easily.
Thank You in advance. (1 Reply)