Acme is launching 18 new branches in cities where they currently have no existing branches, and consequently need a new subnetting plan to support these branches. The Acme CIO has asked that each subnet should host at least 550 devices. If a choice needs to be made between the number of subnets and the size of each subnet, then the number of subnets should be maximized as much as possible in order to allow growth in the total number of the branches.
Acme has obtained an IPv4 network address of 123.45.0.0/17.
This address needs to be subnetted further. The company's subnet plan should include address allocations for:
• 2 router interfaces in each subnet
• 18 managed devices in each subnet (e.g. servers or switches)
• A DHCP pool for the remaining usable addresses
Create an addressing plan for subnet 15, outlining the subnet ID, broadcast address and relevant addresses as outlined in the scenario. 

 

Provide explanation and working