Information Technology Reference
In-Depth Information
Figure 6-2
Addressing Design Exercise 1 Topology: VLSM Subnets (Answer)
192.168.1.0/28
RTA
192.168.1.56/30
192.168.1.48/30
192.168.1.32/28
192.168.1.16/28
RTC
RTB
192.168.1.52/30
List the address space that is still available for future expansion.
For the solution shown in Figure 6-2, address space still available is .60/30, .64/26, and .128/25.
The topology shown in Figure 6-3 has LAN subnets already assigned out of the 192.168.1.0/24
address space. Using VLSM, create and label the WANs with subnets from the remaining address space.
Figure 6-3
Addressing Design Exercise 1 Topology: WAN Subnets (Answer)
192.168.1.0/26
Address Space
192.168.1.0/24
RTA
192.168.1.168/30
192.168.1.160/30
192.168.1.28/27
192.168.1.64/26
RTC
RTB
192.168.1.164/30
List the address space that is still available for future expansion.
Answers can vary. In the answer shown in Figure 6-3, the available address space is .172/30, .176/28,
and .192/26.
Exercise 2
Your address space is 192.168.1.192/26. Each LAN needs to support ten hosts. Use VLSM to create a
contiguous IP addressing scheme. Label Figure 6-4 with your addressing scheme. Don't forget the
WAN links.
