How to create inter vlan?

inter Vlan possible on MLS (Multi Layer Switch) like Cisco3750.1st of all you should raise one layer of port which you want  use for inter vlan routing. and configure SVI (Switched Virtual Interface) .

1st step: make port of layer3

go on configuration mode

#ip routing

#int fa0/10

#no switch port

#ip add10.1.1.1255.0.0.0

after this am going to configure vlan 

go on configure mode

#vlan10

#int fa0/10

# switch port Mod access

#switch port access vlan10

configuration of SVI (Switched Virtual Interface)

#interface Vlan10 

#ip add10.1.1.1255.0.0.0

#no shut

(now we are on layer3 and in layer3 port automaticallay down thats why we need to give command no shut )