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Basic VLAN question 3348
I have a very simple question in setting up VLan on a 3348 switch. currently they is none setup just the default . I want to create a VLAN for isolated project. If I just add another VLAN say 2 and assigh 4 ports to it would that affect the default vlan or I would then have to tocuh all ports.
If a port is not explicitly assigned to a VLAN then it falls underthe default VLAN in this Casr VLAN1.
My main concern if I added a VLAN will I loose communication . I have two 3348 stacked together.
Thanks
DELL-Cuong N.
1017 Posts
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Posted March 10th, 2006 13:00
There are some papers available here that might help you understand VLAN better:
http://www1.us.dell.com/content/topics/global.aspx/solutions/en/pwcnt_papers?c=us&cs=555&l=en&s=biz
Specifically look at this paper:
http://www.dell.com/downloads/global/products/pwcnt/en/app_note_8.pdf
Additionally you can find alot of information online about VLAN (try google search on VLAN).
Basically VLANs are completely isolated (at least for Layer2). So when you create the new VLAN, any port belonging to that VLAN exclusively will definitely not be able to communicate with any port belonging to another VLAN (again depending on how you set it up - for example a port may belong to more then one VLAN if the device connected to the port is VLAN aware).
There are many ways to use/setup VLAN to do what you want and although it is not complex there are subtleties that you need to understand to properly make use of the technology.
It is too difficult to answer your question without understanding your exact setup and requirements. If you read up on the topic then try some experiments and if you still have a problem then post your questions and we'll see how we can help.
Cuong.