Class B and Subneting

Class B and Subneting

Good morning,

We use a 172.24 range which has been subneted in "class C" subnets for each office. Even if I want to use a 172.24.100.0 255.255.255.0 test (ie. IP address manager...) it is refused and it ask me "" Please enter a class C only".

All my subnets have a /24 bit mask, but I can't test anyone because it's part of a 172.24.x.x network....

Is this normal ? Is there a workaround ?





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