IP overlapping

[RawaAmbrose2002]

I had this for my exam today, given IP was 192.168.60.0/27 and had to subnet it for 6 networks based on the topology in the picture, after subnetting and getting new networks and using it for the routers overlapping would happen between them, and i dont know why or how to fix it, I DONT EVEN KNOW WHATS WRONG?

[Kasun Bandara]

Hi,

you may have configured subnet mask to wrong value mistakenly. 

[RawaAmbrose2002]

Could you elaborate a little more please? i would very appreciate it!

[Kasun Bandara · Accepted solution]

You have divided main subnet to /30 segments. so when you configuring you should use 255.255.255.252 as subnet mask. if mistakenly subnet configured as 255.255.255.0, or any bigger segment sizes, that will overlap subnets.