L - De Lab esigning and Im g mplementing a S Subnette IPv4 A ed Address sing S Scheme e T Topology A Addressing Table g Device R1 R Interface IP Add...

Create a subnetting scheme that meets the required number of subnets and required number of host addresses.

In this scenario, you are a network administrator for a small subdivision within a larger company. You must create multiple subnets out of the 192.168.0.0/24 network address space to meet the following requirements:

• The first subnet is the employee network. You need a minimum of 25 host IP addresses.

• The second subnet is the administration network. You need a minimum of 10 IP addresses.

• The third and fourth subnets are reserved as virtual networks on virtual router interfaces, loopback 0 and loopback 1. These virtual router interfaces simulate LANs attached to R1.

• You also need two additional unused subnets for future network expansion.

Note: Variable length subnet masks will not be used. All of the device subnet masks will be the same length.

Answer the following questions to help create a subnetting scheme that meets the stated network requirements:

1) How many host addresses are needed in the largest required subnet? _____________________

2) What is the minimum number of subnets required? _________________________________

Lab - Designing and Implementing a Subnetted IPv4 Addressing Scheme

3) The network that you are tasked to subnet is 192.168.0.0/24. What is the /24 subnet mask in binary?

________________________________________________________________________________

4) The subnet mask is made up of two portions, the network portion, and the host portion. This is represented in the binary by the ones and the zeros in the subnet mask.

In the network mask, what do the ones represent? ________________________________________

In the network mask, what do the zeros represent? _______________________________________

5) To subnet a network, bits from the host portion of the original network mask are changed into subnet bits. The number of subnet bits defines the number of subnets. Given each of the possible subnet masks depicted in the following binary format, how many subnets and how many hosts are created in each example?

Hint: Remember that the number of host bits (to the power of 2) defines the number of hosts per subnet (minus 2), and the number of subnet bits (to the power of two) defines the number of subnets. The subnet bits (depicted in bold type face) are the bits that have been borrowed beyond the original network mask of /24. The /24 is the slash prefix notation and corresponds to a dotted decimal mask of 255.255.255.0.

(/25) 11111111.11111111.11111111.10000000