Information Technology Reference
In-Depth Information
Figure 6-12
Addressing Design Scenario 6 Topology (Answer)
10.0.0.0/16
A
65,000 Hosts
Address Space
10.0.0.0/15
Fa0/0
RTA
S0/1
DCE
S0/0
10.1.160.8/30
10.1.160.0/30
10.1.128.0/19
10.1.0.0/17
S0/0
DCE
C
S0/1
B
Fa0/0
Fa0/0
S0/1
RTC
RTB
10.1.160.4/30
S0/0
DCE
8000 Hosts
30,000 Hosts
Fill in Table 6-8 with all necessary IP address configuration information for all devices. Use
dotted decimal format for the subnet mask.
2.
Table 6-8
Addressing Table for VLSM Scenario 6
Device
Interface
IP Address
Subnet Mask
Default Gateway
RTA
Fa0/0
10.0.0.1
255.255.0.0
—
S0/1
10.1.160.1
255.255.255.252
—
S0/0
10.1.160.9
255.255.255.252
—
RTB
Fa0/0
10.1.0.1
255.255.128.0
—
S0/1
10.1.160.2
255.255.255.252
—
S0/0
10.1.160.5
255.255.255.252
—
RTC
Fa0/0
10.1.128.1
255.255.224.0
—
S0/1
10.1.160.6
255.255.255.252
—
S0/0
10.1.160.10
255.255.255.252
—
HostA
NIC
10.0.0.2
255.255.0.0
10.0.0.1
HostB
NIC
10.1.0.2
255.255.128.0
10.1.0.1
HostC
NIC
10.1.128.2
255.255.224.0
10.1.128.1
List the address space that is still available for future expansion.
3.
For the solution shown in Figure 6-12, the address space still available is 10.1.160.12/30,
10.1.160.16/28, 10.1.160.32/27, 10.1.160.64/26, 10.1.160.128/25, 10.1.161.0/24, 10.1.162.0/23,
10.1.164.0/22, 10.1.168.0/21, 10.1.176.0/20, and 10.1.192.0/18.
