Subnetting Class B address

Mgabile

Please help!!!

I want to subnet a class B address 172.16.0.0 with 750 users. and use VLSM in the serial using the last available network and apply / 30.

Thanks

tube

To have 750 hosts, there would be 2^10 = 1024 hosts (usable hosts = 1022)

The default subnet mask for class B is 255.255.0.0. Since 0s represent the hosts:

255.255.11111100.00000000 = 255.255.252.0

Find the increment:
256 - 252 = 4

So you have the following subnets:

172.16.0.0 /22
172.16.4.0 /22
172.16.8.0 /22
:
.
172.16.252.0 /22

Using VLSM on the serial link, using the last subnet:

last network: 172.16.252.0

subnet mask: 255.255.255.252

256 - 252 = 4

So you have the following subnets to be used on the serial link
(only 2 usable hosts on a serial link!)

172.16.252.0 /30 (172.16.252.1 - 172.16.252.2)
172.16.252.4 /30 (172.16.252.5 - 172.16.252.6)
172.16.252.8 /30 ....
:
.