Default
Device Interface IP Address Subnet Mask Gateway
G0/0 192.168.100.1 255.255.255.224 N/A
R1 G0/1 192.168.100.33 255.255.255.224 N/A
S0/0/0 192.168.100.129 255.255.255.224 N/A
G0/0 192.168.100.65 255.255.255.224 N/A
R2 G0/1 192.168.100.97 255.255.255.224 N/A
S0/0/0 192.168.100.158 255.255.255.224 N/A
S1 VLAN 1 192.168.100.2 255.255.255.224 192.168.100.1
S2 VLAN 1 192.168.100.34 255.255.255.224 192.168.100.33
S3 VLAN 1 192.168.100.66 255.255.255.224 192.168.100.65
S4 VLAN 1 192.168.100.98 255.255.255.224 192.168.100.97
PC1 NIC 192.168.100.30 255.255.255.224 192.168.100.1
PC2 NIC 192.168.100.62 255.255.255.224 192.168.100.33
PC3 NIC 192.168.100.94 255.255.255.224 192.168.100.65
PC4 NIC 192.168.100.126 255.255.255.224 192.168.100.97
Q & A AND SCREENSHOTS:
Part 1: Design an IP Addressing Scheme
Step 1: Subnet the 192.168.100.0/24 network into the appropriate number of subnets.
a. Based on the topology, how many subnets are needed? – 5 subnets
b. How many bits must be borrowed to support the number of subnets in the topology table? – 3
bits
c. How many subnets does this create? 23 = 8 subnets
d. How many usable hosts does this create per subnet? 30 usable hosts
Note: If your answer is less than the 25 hosts required, then you borrowed too many bits.
e. Calculate the binary value for the first five subnets. The first subnet is already shown.
Net 0: 192 . 168 . 100 . 0 0 0 0 0 0 0 0
Net 1: 192 . 168 . 100 . 00100000
Net 2: 192 . 168 . 100 . 01000000
Net 3: 192 . 168 . 100 . 01100000
Net 4: 192 . 168 . 100 . 10000000
f. Calculate the binary and decimal value of the new subnet mask.
11111111.11111111.11111111. 11100000
255 . 255 . 255 . 224
g. Fill in the Subnet Table, listing the decimal value of all available subnets, the first and last
usable host address, and the broadcast address. Repeat until all addresses are listed.
Note: You may not need to use all rows.
Subnet Table
Subnet First Usable Last Usable
Number Subnet Address Host Address Host Address Broadcast Address
0 192.168.100.0 192.168.100.1 192.168.100.30 192.168.100.31
1 192.168.100.32 192.168.100.33 192.168.100.62 192.168.100.63
2 192.168.100.64 192.168.100.65 192.168.100.94 192.168.100.95
3 192.168.100.96 192.168.100.97 192.168.100.126 192.168.100.127
4 192.168.100.128 192.168.100.129 192.168.100.158 192.168.100.159
5 192.168.100.160 192.168.100.161 192.168.100.190 192.168.100.191
6 192.168.100.192 192.168.100.192 192.168.100.222 192.168.100.223
7 192.168.100.224 192.168.100.225 192.168.100.254 192.168.100.255
10
