Shared Servers

Unanswered Question
Nov 28th, 2008

How can I assign a single switchport (ie on a Catalyst series switch) on multiple VLAN's. The purpose is to share resources, like servers or printers.

I have this problem too.
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fred.mancen Fri, 11/28/2008 - 05:45


if your server/printer does support 802.1Q (trunking), you just need to configure the interfaces as a trunk port.


PETROBRASEISA Fri, 11/28/2008 - 07:02

Hi Thank you for the answer, but they don't support 802.1q. In fact, i need to know if the IOS has something like the PVID on Baystack switches...

fred.mancen Fri, 11/28/2008 - 07:07


I don't think so...IOS supports the native VLAN feature, that is the PVID, but just on trunk settings.

I understand what you want, the 3Com switches also have this feature, that is called "hybrid port", supporting the untagged native VLAN and a second tagged VLAN, as the Baystack.


Jon Marshall Fri, 11/28/2008 - 10:12

If you want to share resources can you not just set up inter-vlan routing on your cisco switch and route from client vlans to vlans with printers/servers ?

What is the make of Cisco switch ?


PETROBRASEISA Fri, 11/28/2008 - 10:49

But, to do this do I have to use a router anyway?

They are Catalyst 2950C-24 and Catalyst 2924M-XL-EN.

Jon Marshall Fri, 11/28/2008 - 10:52

Yes you do. I just wanted to check that the switch you had was not L3 capable.


fred.mancen Fri, 11/28/2008 - 10:57

What Jon wants to say is that is more easy to share resources that are on different VLANs using inter VLAN routing instead the way you asked. Example: if you want to share a printer that is on VLAN 10 (subnet 10.10.x.x) and the clients are on VLAN 20 (subnet 10.20.x.x), so you need to use a layer 3 device (a router or a multilayer switch as a 3500 series > up) to do it. Networks directly connected (VLANs) are automatically routed, because the printer and the clients are in different broadcast domains. As I can see, you are typing from Brazil, right? If you need help further, send me an e-mail: [email protected]. I'm from Rio de Janeiro also...



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