Voice VLAN and Data VLAN

Unanswered Question
Apr 5th, 2007

Dear Netpro's,

Guys I need your expertise for controlling my VLAN's no to talk to each other.

My current network what I have, in one area I created five zones, each zones have voice and data vlans and I created 4 voice vlans and 4 data vlans for each zones, how can I controlling them not to talk to each other and I want them only to talk to server farm vlans.

Your quick response and solution is highly appreciated.

Thank you and best regards

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Overall Rating: 4.5 (2 ratings)
desai.jaideep Thu, 04/05/2007 - 23:18


Ideally members of different vlans would not interect with each other.

But in your case, you need to enable communications between your server vlan and user vlans.This can be achieved by implementing Intervlan routing between all your vlans.But this will enable communication between your user vlan too.So, to restrict that you can apply access-lists to allow communication with server vlans and denying everything else.

Remember that for Intervlan routing, you need to dedicate a seperate block of IPs for each vlans.

Hope that will help.



JUNKSA_2 Fri, 04/06/2007 - 00:20

Dear JD,

Thank you for your immediate reply. Thanks for the info but if you can give me a sample configuration or links that I could start with would be more helpful.

Thank you

desai.jaideep Fri, 04/06/2007 - 00:38


This will work only on a L3 switch.

For eg you have 2 user vlans : vlan 10 and 20

There is a server vlan 100

for intervlan routing :

int vlan 10

ip add

ip access-group 111 in

int vlan 20

ip add

ip access-group 111 in

int vlan 100

ip add

access-list 111 permit ip any

access-list 111 deny any any

Pls visit the following links :

For InterVLAN routing.


For configuring access-list:


Hope that will help.



JUNKSA_2 Fri, 04/06/2007 - 20:43

Dear JD,

Thanks a lot. You deserve another thumbs up, keep up the goodwork.

Best regards.

desai.jaideep Fri, 04/06/2007 - 21:03


If I have solved your problem, You will see a drop down box indicating that this post has solved the problem. Pls click on that. These are the carrots I am earning by helping you.



JUNKSA_2 Fri, 04/06/2007 - 21:20

Dear JD,

I cannot find that option in the drop down box indicating that this post is solved the problem.

The only option that I can see are the points that I can use for voting.

Can you tell me exactly where it is. I am willing to that because it is really deserve for you.


desai.jaideep Fri, 04/06/2007 - 21:33

You will see a check box called "Resolved my issue." in my posts.

If you are not getting it no problem. Leave it anyway. Concentrate on you implementation. Thats what important to you.



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