Your company network currently consists of workstations, switches and routers. There are 12 departments in the company. The company plans to use the class B address
range starting at 172.16.0.0. The company has a requirement that each department be assigned a subnet. Subnets should be designed to allow for the maximum number of
hosts on each department subnet using classful subnetting. The company also wants the three routers to communicate on the minimum quantity of IP addresses using three
subnets.
Part I: Network Planning
1. Based on the requirements, what subnet mask should be used for Subnets 0 – 11? Each department will have the maximum quantity of addresses.
2. Complete the required design information in the table below:
Subnet Department Subnet ID Host ID Range Broadcast Address
0 Sales
1 Finance
2 Marketing
3 Manufacturing
4 HR
5 Payroll
6 MIS
7 Receiving
8 Shipping
9 Development
10 International
11 Executive
12 Serial Interfaces between routers (VLSM)
Each router will have two serial interfaces 1. 2. 3. 1.
2.
3.
1.
2.
3.
VLSM for Subnet 12
1. Sales Serial 0/0 and Serial 0/1
2. HR Serial 0/0 and Serial 0/1
3. Payroll Serial 0/0 and Serial 0/1
3. Notice below that the PCs are named based on their department affiliation. So the two sales department systems are named Sales1 and Sales2. You need to
determinean IP addresses for each host on the LAN. To do this, complete the table below:
Host IP Address Subnet Mask Gateway Address (assigned to Router)
Sales1
Sales2
HR1
HR2
Payroll1
Payroll2
4. Each router will use one of its Ethernet interfaces to communicate with the department LAN and two serial interfaces to communicate will other routers. As the
final part of your design, you need to determine the IP addresses for the routers and serial interfaces. To do this, complete the table below:
Sales
Ethernet and Serial Interfaces IP Address Subnet Mask Router
Fast Ethernet 0/0 Sales
Serial 0/0 To HR
Serial 0/1 To Payroll
HR
Ethernet and Serial Interfaces IP Address Subnet Mask Router
Fast Ethernet 0/0 HR
Serial 0/0 To Sales
Serial 0/1 To Payroll
Payroll
Ethernet and Serial Interfaces IP Address Subnet Mask Router
Fast Ethernet 0/0 Payroll
Serial 0/0 To Sales
Serial 0/1 To HR
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