VLAN in Data Center Question
hitmen
Banned Posts: 133
in CCNA & CCENT
Hi,
This topic is not exactly related to CCNA but I must clarify my doubts.
In CCNA, we learn that vlan are different broadcast domains but that they are in L2.
However, in the data center that i work, the switches (data center switches not those small ethernet switches) are separated via VLAN in their topology.
I dont understand why this is done.
This topic is not exactly related to CCNA but I must clarify my doubts.
In CCNA, we learn that vlan are different broadcast domains but that they are in L2.
However, in the data center that i work, the switches (data center switches not those small ethernet switches) are separated via VLAN in their topology.
I dont understand why this is done.
Comments
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networker050184
Mod Posts: 11,962 Mod
There are many reasons to use VLANs. Why they are being used in your network depends on the design.An expert is a man who has made all the mistakes which can be made. -
mdomino
Member Posts: 81 ■■□□□□□□□□
They aren't only used to separate broadcast domains. You could also use them to enforce QoS policies and do tons of other things, at networker050184 said. Do you have a more specific question you wanted to ask about them?
Another key thing to remember is that unless you are working with L3 switches, everything your switch does is L2. It really helps to segregate STP, VTP, VLANs and routing in your head by the different layers of the OSI model as they are all interrelated and separated at the same time.