Overlapping question

[Fabio Francisco]

Can someone here please clarify a question:

If I have a vlan 10 IP 172.16.10.0/24 set on a Layer 3 switch Can I stll assign to a layer 3 interface an IP address from the range 172.16.10.0/24 eq 172.16.10.2? My switch states that I cannot error: "172.16.10.2 overlaps with VLAN10"

Just wanted to know why....

Cheers,

Fabio

[Reza Sharifi · Accepted solution]

Hi Fabio,

The error message is correct.  You can not assign the same IP subnet range to 2 different routed interfaces.  Each subnet has to be unique.

You could take your 172.16.10.0/24 subnet and make 2 different /25 subnets and each subnet can now be assign to a different interface.

HTH

Reza

[Fabio Francisco]

Thanks for the reply mate.