I don’t know the difference between traditional Subnetting and VLSM Subnetting.
Any info would be appreciated!
In: Technology
Classful subnets use predefined ranges based on the left most bit and sizes. For example in Class A networks the leading bit is always 0, (0.0.0.0-127.255.255.255) and subnets are always a /8 in size. Subneting is easy because you can just look at the address and without doing any math know the class and subnet size. However, this method is inefficient and if left in place IPv4 space would’ve disappeared decades ago, which is why it was quickly abandoned.
Variable length subnet masks allow you to use a mask to determine the size of subnet along any bit boundary. This allows for much more flexibility and efficient use of address space, but requires some math to determine size and spacing of subnets.
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