Lab 2.2 familiarity with Subnet calculators Plug in the following example into t

Question

Lab 2.2 familiarity with Subnet calculators

Plug in the following example into the subnet calculator you chose to install, and show screen shots and brief explanation of the screenshots.

Subnetting Networks

Here is an example for how to subnet networks.

I am a business owner that has six stores in Fargo. I own or lease a class C network 192.10.10.0/24.

The “/24” at the end of the network number (192.10.10.0) is referred as Classless Inter-Domain Routing (CIDR) notation. CIDR is a methodology for Variable Length Subnet Mask (VLSM). The CIDR notation is just telling you that there is 24 bits set to 1 in the subnet mask. In other words “/24” is the equivalent subnet mask of 255.255.255.0 (a class C network). The first three octets in a class C are the network area and the 4th octet is the host area >>>255.255.255.

You need 6 networks, so change 6 to binary = 110. You will need to borrow 3 bits from the host portion of the network number of 192.10.10.0, so your new subnet mask is:255.255.255.224

11111111.11111111.11111111.00000000 changes to

11111111.11111111.11111111.11100000

CIDR changed from a “/24” to a “/27”

The first 3 bits have a bit weight in that 4th octet is 128, 64, and 32

The networks start in increments of 32

000 – First network is 192.10.10.0 to 192.168.10.31 (network number is 0 Broadcast is 31)

001 – Second network is 192.10.10.32 to 192.168.10.63 (network number is 32 Broadcast is 63)

010 – Third network is 192.10.10.64 to 192.168.10.95 (network number is 32 Broadcast is 95)

011 – Fourth network is 192.168.10.96 to 192.168.10.127 (network number is 32 Broadcast is 127)

100 – Fifth network is 192.168.10.128 to 192.168.10.159 (network number is 32 Broadcast is 159)

101 – Sixth network is 192.168.10.160 to 192.168.10.191 (network number is 32 Broadcast is 191)

Two more available subnets

110 – Seventh network is 192.168.10.192 to 192.168.10.123 (network number is 32 Broadcast is 123)

111 – Eighth network is 192.168.10.224 to 192.168.10.255 (network number is 32 Broadcast is 255)

This would allow 30 addresses on each network

Show screenshots of 192.168.10.0 subnetted into 8 networks in subnet calculator

Explanation / Answer

IP Address: 192.168.10.0

Subnet mask/ bits in mask: 255.255.255.224/27

IP Class: C

Subnet to display: 8

Number of hosts: 30

Subnet addr First Host Last Host Subnet Mask Broadcast 1 192.168.10.0 192.168.10.1 192.168.10.30 255.255.255.224 192.168.10.31 2 192.168.10.32 192.168.10.33 192.168.10.62 255.255.255.224 192.168.10.63 3 192.168.10.64 192.168.10.65 192.168.10.94 255.255.255.224 192.168.10.95 4 192.168.10.96 192.168.10.97 192.168.10.126 255.255.255.224 192.168.10.127 5 192.168.10.128 192.168.10.129 192.168.10.158 255.255.255.224 192.168.10.159 6 192.168.10.160 192.168.10.161 192.168.10.190 255.255.255.224 192.168.10.191 7 192.168.10.192 192.168.10.193 192.168.10.222 255.255.255.224 192.168.10.223 8 192.168.10.224 192.168.10.225 192.168.10.254 255.255.255.224 192.168.10.255

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