How to exchange two vlan

1. On sw1 and sw2 and creates vlan10 VLAN20, and added to the designated port to the vlan in, for example, in the port pc1 sw1 added to vlan10.

2. The optical interface mode sw1 and sw2 are connected to the trunk link, and 20 by allowing vlan10.

3. The top three switches that device is not, and if so is simple, create the same vlan10 and 20 on Layer 3 switches, the same pattern was changed trunk port it is connected to the switcher, the switcher and three layer switch ports connected to the same trunk to Oh.

4. From three modes on Layer 3 switches, each interface vlan ip address 10 and 20, respectively, the address in the corresponding vlan pc gateway.

5. If your device is not then the top three switches, but routers, you will need a screwdriver on top of the interface, configure the router-arm routing.