Information Technology Reference
In-Depth Information
Table 5-9
Addressing Table for R2
continued
Device
Interface
IP Address
Subnet Mask
B1-R2
Fa0/0
172.20.0.1
255.255.254.0
Fa0/1
172.20.2.1
255.255.254.0
Fa1/0
172.20.4.1
255.255.254.0
Fa1/1
172.20.6.1
255.255.254.0
S0/0/0
172.20.250.2
255.255.254.0
B2-R2
Fa0/0
172.20.8.1
255.255.254.0
Fa0/1
172.20.10.1
255.255.254.0
Fa1/0
172.20.12.1
255.255.254.0
Fa1/1
172.20.14.1
255.255.254.0
S0/0/0
172.20.252.2
255.255.254.0
B3-R2
Fa0/0
172.20.16.1
255.255.254.0
Fa0/1
172.20.18.1
255.255.254.0
Fa1/0
172.20.20.1
255.255.254.0
Fa1/1
172.20.22.1
255.255.254.0
S0/0/0
172.20.254.2
255.255.254.0
ISP-R2
S0/0/0
209.165.201.6
255.255.255.252
S0/0/1
209.165.201.9
255.255.255.252
Fa0/0
209.165.200.229
255.255.255.252
Web Server 2
NIC
209.165.200.230
255.255.255.252
Task 1: Design and Document an Addressing Scheme
Design an addressing scheme.
Step 1.
Use the topology shown in Figure 5-15, along with the following requirements, to design
an addressing scheme:
The WAN links between R1 and R2 and their respective ISP routers are already con-
figured. Also, the links between the ISPs and the Web Servers are already configured.
■
Because RIPv1 is a classful routing protocol, you cannot implement variable-length
subnet masking (VLSM). Subnet each region's address space using the following
guidelines:
■
The largest subnet in Region 1's address space is 1000 hosts. What is the subnet
mask you should use for the 10.1.0.0/16 address space?
255.255.252.0
■
The largest subnet in Region 2's address space is 500 hosts. What is the subnet
mask you should use for the 172.20.0.0/16 address space?
255.255.254.0
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