Information Technology Reference
In-Depth Information
Table 6-6
Addressing Table for VLSM Scenario 4
continued
Device
Interface
IP Address
Subnet Mask
Default Gateway
RTB
Fa0/0
172.24.4.1
255.255.254.0
S0/1
172.24.7.2
255.255.255.252
S0/0
172.24.7.5
255.255.255.252
RTC
Fa0/0
172.24.6.1
255.255.255.0
S0/1
172.24.7.6
255.255.255.252
S0/0
172.24.7.10
255.255.255.252
HostA
NIC
172.24.0.2
255.255.252.0
172.24.0.1
HostB
NIC
172.24.4.2
255.255.254.0
172.24.4.1
HostC
NIC
172.24.6.2
255.255.255.0
172.24.6.1
List the address space that is still available for future expansion.
3.
For the solution shown in Figure 6-10, the address space still available is .7.12/30, .7.16/28, .7.32/27,
.7.64/26, and .7.128/25.
Scenario 5
Complete Addressing Design Scenario 5 using the following list of requirements:
Address space: 10.8.64.0/18
RTA LAN, 6000 hosts; RTB LAN, 3000 hosts; RTC LAN, 1000 hosts
Using good VLSM design practices, contiguously assign subnets to the topology shown in
Figure 6-11.
1.
Figure 6-11
Addressing Design Scenario 5 Topology (Answer)
10.8.64.0/19
A
6000 Hosts
Address Space
10.8.64.0/18
Fa0/0
RTA
S0/1
DCE
S0/0
10.8.116.8/30
10.8.116.0/30
10.8.112.0/22
10.8.96.0/20
S0/0
DCE
C
S0/1
B
Fa0/0
Fa0/0
S0/1
RTC
RTB
10.8.116.4/30
S0/0
DCE
1000 Hosts
3000 Hosts
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