From the course: Cloud Data, Platform, and Applications Security by Pearson

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Physical data center design

Physical data center design

From the course: Cloud Data, Platform, and Applications Security by Pearson

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Physical data center design

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In the previous lesson 5, I kind of teased you a little bit about VXLAN and what's going on in modern data centers. In this lesson, I want to expand upon that and realize that traditional network topologies, network data center design, for those of you who are familiar, was more of a three-layer model where you had your kind of your core routers or multi-layer switches and then you would have an aggregate or a distribution layer and then you would have like this access layer and that was there that was a Cisco model traditional and it relied upon VLAN technology. So in that legacy environment you were using 802.1Q frames and the .1Q frame you know in the in the modified there was a field in there that had the VLAN identifier, okay? Now, that VLAN identifier was a 12-bit field, okay? So the identifier was 12 bits. All right, well, 12 bits is 2 to the 12th power is 4,096, right? So because of that, there was a limitation on the number of VLANs you could have in that data center…

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