Information Technology Reference
In-Depth Information
List the address space that is still available for future expansion.
3.
For the solution shown in Figure 6-8, the address space still available is .19.204/30, .19.208/28, and
.19.224/27.
Scenario 3
Complete Addressing Design Scenario 3 using the following list of requirements:
Address space: 172.16.0.0/22
■
RTA LAN, 500 hosts; RTB LAN, 250 hosts; RTC LAN, 100 hosts
■
Using good VLSM design practices, contiguously assign subnets to the topology shown in
Figure 6-9.
1.
Figure 6-9
Addressing Design Scenario 3 Topology (Answer)
172.16.0.0/23
A
500 Hosts
Address Space
172.16.0.0/22
Fa0/0
RTA
S0/1
DCE
S0/0
172.16.3.136/30
172.16.3.128/30
172.16.3.0/25
172.16.2.0/24
S0/0
DCE
C
S0/1
B
Fa0/0
Fa0/0
S0/1
RTC
RTB
172.16.3.132/30
S0/0
DCE
100 Hosts
250 Hosts
Fill in Table 6-5 with all necessary IP address configuration information for all devices. Use
dotted decimal format for the subnet mask.
2.
Table 6-5
Addressing Table for VLSM Scenario 3
Device
Interface
IP Address
Subnet Mask
Default Gateway
RTA
Fa0/0
172.16.0.1
255.255.254.0
—
S0/1
172.16.3.129
255.255.255.252
—
S0/0
172.16.3.137
255.255.255.252
—
RTB
Fa0/0
172.16.2.1
255.255.255.0
—
S0/1
172.16.3.130
255.255.255.252
—
S0/0
172.16.3.133
255.255.255.252
—
RTC
Fa0/0
172.16.3.1
255.255.255.128
—
S0/1
172.16.3.134
255.255.255.252
—
S0/0
172.16.3.138
255.255.255.252
—
