Love the work that you are doing and can not wait for the VM stuff.
Anyway, I work at a school district and I have broken down my network into about 6 vlans. We are building a new school and there is a lot of IP infrastructure that is going into it (IP cameras, clocks, projectors, etc.) So I need to create a new subnet. I understand most of what I am doing, I just want to know why this is and how to figure it out on the fly -
I went to ye old local subnet calculator and put in the following address
10.55.50.1 and a subnet of 255.255.252.0/20 I would like to have 1024 addresses. I thought Vlan 50 would be good to remember. But when I put this in the calculator I get
Address: 10.55.50.1 00001010.00110111.001100 10.00000001
Netmask: 255.255.252.0 = 22 11111111.11111111.111111 00.00000000
Wildcard: 0.0.3.255 00000000.00000000.000000 11.11111111
Network: 10.55.48.0/22 00001010.00110111.001100 00.00000000 (Class A)
Broadcast: 10.55.51.255 00001010.00110111.001100 11.11111111
HostMin: 10.55.48.1 00001010.00110111.001100 00.00000001
HostMax: 10.55.51.254 00001010.00110111.001100 11.11111110
Hosts/Net: 1022 (Private Internet)
My Questionr: Why does it start at 10.55.48.0 as the network address? I understand the range etc. Just why can it not start at 50 and go 10.X.50-53.X instead of 10.X.48-51.x. I do not understand how that part of the deal is figured.