Inter VLAN Routing

[naveen.bodhula1]

Hi,

Consider the picture Attached

I want to make Inter VLAN between to switches using a Router.

when trying to use subinterfaces using this CLI command:

interface FastEthernet0/0.1

encapsulation dot1Q 10

ip address 10.0.0.1 255.0.0.0

interface FastEthernet0/0.2

encapsulation dot1Q 20

ip address 10.0.0.20 255.0.0.0

But when I give IP Address for fa0/0.2 it is showing "10.0.0.0 is overlapping with interface fa0/0.1"

Can't I give same network for different Subinterfaces???

and How can I configure InterVALN for this Design?

Thanks in Advance

[Reza Sharifi]

Hi,

That is the correct behavior.  You can't use the same subnet for 2 different sub-interfaces.

Each sub-interfaces needs to be in its own subnet,

interface FastEthernet0/0.1

encapsulation dot1Q 10

ip address 10.0.0.1 255.255.255.0

interface FastEthernet0/0.2

encapsulation dot1Q 20

ip address 10.0.1.20 255.255.255.0

HTH

[naveen.bodhula1]

Hi,

Thanks for the reply,

But still it didn't worked showing same error '10.0.0.0 is overlapping with interface fa0/0.1'