Information Technology Reference
In-Depth Information
Router B1-R1 Interface
Subnet Number
Subnet Address
Fa0/0
0
10.1.0.0/21
Fa0/1
1
10.1.8.0/21
Fa1/0
2
10.1.16.0/21
Fa1/1
3
10.1.24.0/21
Router B2-R1 Interface
Subnet Number
Subnet Address
Fa0/0
0
10.1.32.0/22
Fa0/1
1
10.1.36.0/22
Fa1/0
2
10.1.40.0/22
Fa1/1
3
10.1.44.0/22
Router B3-R1 Interface
Subnet Number
Subnet Address
Fa0/0
0
10.1.48.0/23
Fa0/1
1
10.1.50.0/23
Fa1/0
2
10.1.52.0/23
Fa1/1
3
10.1.54.0/23
For the WANs in Region 1, subnet the address space 10.1.64.0/28. Record the subnets
in the table that follows.
■
Router
Subnet Number
Subnet Address
B1-R1 <—> R1
0
10.1.64.0/30
B2-R1 <—> R1
1
10.1.64.4/30
B3-R1 <—> R1
2
10.1.64.8/30
The address space for Region 2 is 172.20.0.0/16. Each branch router (B1-R2, B2-R2,
and B3-R2) should be allotted address space based on the following requirements.
Starting with the largest requirement, assign address space to each router:
■
B1-R2 needs space for 500 hosts
172.20.0.0/23
■
B2-R2 needs space for 200 hosts
172.20.2.0/24
■
B3-R2 needs space for 100 hosts
172.20.3.0/25
■
Divide the address space for each branch router into four equal subnets. Record the
subnets in the tables that follow.
■
