Subnetting - help needed

[ITexpert]

Hello Guys,

I am designing the vlans in my company network and want to configure in following way :

Valn1 --> 10.110.1.0 /26 : IP range (10.110.1.1 to 10.110.1.63) --> gateway: 10.110.1.1

Vlan 2 --> 10.110.1.0 /24 --> IP range (10.110.1.65  to 10.110.1.254) ---> gateway  10.110.1.66

I am confuse is it normal to configure this type of scenario or do i  face any technical issues aftering implementing this ?

The reason for this is to save IP addresses.

[Reza Sharifi · Accepted solution]

Hi,

This will not work as subnet 10.110.1.0 /26 is included in subnet 10.110.1.0 /24.

You could, however, break down the subnet like this if you don't need more than 62 hosts in each segment.

10.110.1.0/26

10.110.1.64/26

10.110.1.128/26

10.110.1.196/26

If this is in production, making this change will cause an outage and requires a maintenance window.

HTH