Information Technology Reference
In-Depth Information
Router B1-R1 Interface
Subnet Number
Subnet Address
Fa0/0
0
10.1.0.0/19
Fa0/1
1
10.1.32.0/19
Fa1/0
2
10.1.64.0/19
Fa1/1
3
10.1.96.0/19
Router B2-R1 Interface
Subnet Number
Subnet Address
Fa0/0
0
10.1.128.0/20
Fa0/1
1
10.1.144.0/20
Fa1/0
2
10.1.160/20
Fa1/1
3
10.1.176.0/20
Router B3-R1 Interface
Subnet Number
Subnet Address
Fa0/0
0
10.1.192.0/21
Fa0/1
1
10.1.200.0/21
Fa1/0
2
10.1.208.0/21
Fa1/1
3
10.1.216.0/21
For the WANs in Region 1, subnet the address space 10.1.255.240/28. Record the sub-
nets in the following table.
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Router
Subnet Number
Subnet Address
B1-R1 <—> R1
0
10.1.255.240/30
B2-R1 <—> R1
1
10.1.255.244/30
B3-R1 <—> R1
2
10.1.255.248/30
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.
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B1-R2 needs space for 4000 hosts
172.20.0.0/20
■
B2-R2 needs space for 2000 hosts
172.20.16.0/21
■
B3-R2 needs space for 1000 hosts
172.20.24.0/22
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Divide the address space for each branch router into four equal subnets. Record the
subnets in the following tables.
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