s4810 management interface

Hi,

I am getting the following error when I try to configure the route to the management network.

This is what I am getting:

* configure

* interface management 0/0

* ip address 10.8.0.14 255.255.255.0

* no shutdown

* exit

* management route 0.0.0.0/0 10.8.0.5

 Address not in the same subnet as management port.

What did I miss?

Thanks

Paras