Question about VLANs

[nov1c33333]

Hello-

I have a switch A carrying VLAN AA and switch B carrying VLAN BB.  Both switches are connected to switch C which should transfer both VLANs to switch D.  The end equipment from VLANs AA and BB is going to be connected to switch D.

Would regular 'switchport trunk encapsulation dot1q' do the trick in this case?

Thanks.

[Amit Singh · Accepted solution]

Hi,

You can configure all the interfaces at trunk interfaces between all these switches. or have only the interface connected between Switch C and switch as trunk interface if you are just allowing only one vlan from both the switch A and switch B.

switchport trunk encapsulation dot1q, would do it for you.

Also you need to configure the switchport as trunkport in order to carry multiple vlans. You need " switchport mode trunk " command under the interface.

http://www.cisco.com/en/US/products/hw/switches/ps700/products_configuration_example09186a008010f615.shtml

Cheers,

-amit singh