Class C subnet challenge

[wwillard]

Given a class C address of 192.168.25.0 / 24, I need to design a network address scheme for 4 subnetworks where the zero subnet is used and the number of hosts on subnet A is 2, Subnet B is 5, Subnet C is between 20 and 30 and subnet D is between 75-100. I'm stumped because if I use a /26 mask then I won't have enough host for subnet D. If I use a /25 mask then I don't have enough subnets. Clearly I am missing something in this simple problem and help will be most appreciated. VLSM is not being used or allowed.

Walt

[Mahesh Gohil]

Hi Walt,

Diving subnet equally will not ensure all subnet to be served as per your requirement. I think below is the only one as per

your requirement....or you can have one more supernet to cate this requirement

Subnet A: 192.168.25.0/30
Subnet B: 192.168.25.8/29
Subnet C: 192.168.25.32/27
Subnet D: 192.168.25.128/25

Regards

Mahesh

[wwillard]

Mahesh,

Thank you for your reply. It confirms the only solution that I could see.

Much appreciated!!

Walt