I have a network address of 136.15.224.0/21 and I have 3 subnetworks (shown in picture). I know that 3 cannot be used for subnet's for I have to increment by 1 to make it 4. So that would make my CIDR /23. I have made a table with the network address, mask, usable IP range and Broadcasts. . This would be for the subnetworks themselves. As i only have 3 subnetworks, the last network address is unused.
In my first subnetwork I only have 1 router, which is fine.
But in my second subnetwork I have 4 router's and then 2 server's that all 4 router's connect to, then a main router that connects to the other 2 subnetworks routers.
When making the table with network addresses. would i have to split my network address into 8? or would i also have to change to 8 subnets instead of 4?
Thanks for any answers, and if you need anymore detail, please ask.
In my first subnetwork I only have 1 router, which is fine.
But in my second subnetwork I have 4 router's and then 2 server's that all 4 router's connect to, then a main router that connects to the other 2 subnetworks routers.
When making the table with network addresses. would i have to split my network address into 8? or would i also have to change to 8 subnets instead of 4?
Thanks for any answers, and if you need anymore detail, please ask.