IP Planning Question

dppagc

I have been given the address space 192.168.1.0/24

I need one subnet for 4 managers and another for 20 employees.

I allocate 192.168.1.0/29 for my 4 managers meaning 192.168.1.1 to 192.168.1.6.

However if I use 192.168.1.0/27 for 20 users meaning 192.168.1.1 to 192,168.1.30, it will overlap with my 4 managers in terms of ip address.

What should I do to conserve ip address and plan properly?

Mooseboost

You can use a /29 for the managers and a /27 for the employees. Are you familiar with VLSM?

jdballinger

When subnetting like that, your best bet is to go largest to smallest where possible. This makes it easy to avoid bit boundaries wasting space, or causing overlaps. Your subnet sizes are good, but start with the larger one and put the smaller one next.

daniel280187

As said before, the best approach is to always start designing the first subnet for the largest group of hosts. To maximise the use of IPs I would recommend you to study VLSM (after studying subnetting of course).

After reading those topics and practicing a bit I am sure you'll be able to solve the problem.

For VLSM I found this link that was very useful to me, hope it helps.

http://files.bluecrow.net/docs/CCNA%20PDFs/CCNA%20CH08%20-%20VLSM.pdf