Assigning IP Addresses

Addressing Table

Learning Objectives Determine the number of subnets needed. Determine the number of hosts needed for each subnet. Design an appropriate addressing scheme using Variable-length subnet Mask (VLSM).

Assign addresses and subnet mask pairs to device interfaces. Introduction In this project, you have been given the network address 172.16.0.0/16 to subnet and provide the IP addressing for the network. Variable-length subnet Mask (VLSM) will be used so that the addressing requirements can be met using the 172.16.0.0/16 network. Subnet 0 will also be used. The network has the following addressing requirements: The R2 LAN will require 8,000 host IP addresses. The R3 LAN will require 1,000 host IP addresses. The R4 LAN will require 250 host IP addresses. The link from R1 to R2 will require an IP address for each end of the link. The link from R1 to R3 will require an IP address for each end of the link. The link from R1 to R4 will require an IP address for each end of the link. Required file: Assigning IP Addresses.using packet tracer

Task 1: Examine the Network Requirements. Examine the network requirements and answer the questions below. Keep in mind that IP addresses will be needed for each LAN interface on each router. 1. How many subnets are needed? 2. What is the maximum number of IP addresses that are needed for a single subnet? 3. How many IP addresses are needed for the R2 LAN? 4. How many IP addresses are needed for the R3 LAN? 5. How many IP addresses are needed for the R4 LAN? 6. What is the total number of IP addresses that are needed? 7. What is the total number of IP addresses that are available in the 172.16.0.0/16 network? 8. Can the network addressing requirements be met using the 172.16.0.0/16 network?

Step 1. Determine the subnet information for the largest network segment or segments. In this case, the R2 LAN is the largest subnets. 1. How many IP addresses are needed for the R2 LAN? 2. What is the smallest size subnet that can be used to meet this requirement? 3. What is the maximum number of IP addresses that can be assigned in this size subnet? Step 2. Assign the subnet to the R2 LAN. Start at the beginning of the 172.16.0.0/16 network. 1. Assign the first available subnet to the R2 LAN. 2. Fill in the chart below with the appropriate information.

\begin{tabular}{|c|c|c|c|c|} \hline Device & Interface & IP Address & Subnet Mask & Default Gateway \\ \hline R1 & S0/0/0 & & & N/A \\ \cline { 2 - 5 } HR & S0/0/1 & & N/A \\ \cline { 2 - 5 } & S0/1/0 & & N/A \\ \hline R2 Manager R3 Sales & Fa0/0 & S0/0/0 & & N/A \\ \hline & Fa0/0 & S0/0/0 & & N/A \\ \hline Supplier & Fa0/0 & S0/0/0 & & N/A \\ \hline R2 Host-A & NIC & & & N/A \\ \hline R2 Host-B & NIC & & & N/A \\ \hline R2 Host-C & NIC & & & \\ \hline R2 Host-D & NIC & & & \\ \hline R3 Host-A & NIC & & & \\ \hline R3 Host-B & NIC & & & \\ \hline R3 Host-C & NIC & & & \\ \hline R3 Host-D & NIC & & & \\ \hline R4 Host-A & NIC & & \\ \hline R4 Host-B & NIC & & \\ \hline R4 Host-C & NIC & & \\ \hline R4 Host-D & NIC & & \\ \hline \end{tabular}