Question

In CASE 1, “Analyzing Business Goals and Constraints,” you learned about your company a. In

CASE 2 your has chosen you to design a new network that will let the company scale to a larger

size and ask you to design network will support about 100 employees also The network will

include a data center.

In this CASE you will have to Design and document an IP addressing scheme to meet Your

Company needs. Specify which IP address blocks will be assigned to different modules of your

network design. The subnet that you have available is 172.16.0.0/16.

1. Show the IP address and subnet calculations for each module?

2. Specify where (if anywhere) route summarization will occur?

Answer 1

1.
For 172.16.0.0; current subnet mask is 255.255.0.0
Step 1 : Convert 255.255.0.0 into binary from:-
255.255.0.0 = 11111111 11111111 00000000 00000000

step 2: Now add 1s in the third part of the address. We have 100 employess. Hence 2 power 7 = 128.
So we need the address will be 11111111 11111111 11111110 00000000

Step 3 : Again convert back from decimal to binary . 255.255.254.0

IPv4 address defines whether the class is Class A, Class B, Class C.
Class Byte range
A   0-127
B   128-191
C   192-223

Here 172 is between 128-191. Hence ip 172.16.0.0 falls under class B.

2.

Route Summarization for ip 172.16.0.0/16 is 172.16.16.0.
16 = 000100000 . put this on 3rd octet of ip 172.16.0.0 gives 172.16.16.0