Click Fraud
Network Architectures: Collapsed Core and Three-Tier Architectures

To connect our network devices, there are different types of layers and topologies that make up network architectures.



Most networks use a three tier architecture that divides the network into three layers:



  • Core Layer
  • Distribution Layer
  • Access. Layer


Three-Tier Architecture with Core, Distribution and Access Layers




Figure 1: Three-Tier Architecture with Core, Distribution and Access Layers.




The core layer is where Layer 3 routing is done and will have have connections to things like servers and the Internet.



The distribution layer is used as an aggregation point for the access layer to connect to the core layer.



The access layer is used to connect end hosts like PC’s and phones.



Collapsed core is another common network architecture.




Collapsed Core Architecture



Figure 2: Collapsed Core Architecture




This design simply merges the roles of the core and distribution layers into one. This type of architecture would be for smaller networks that have enough ports to terminate the access layer on the core switches and do not have any distance limitations.


Lomoveishiy – Finland

I needed those to connect my PC on the third floor to have internet access in that room, and ISP installed their modem on the first floor only. After dropping fiber patch cables, plugged in all cables into these media converters at both sides, and link came up instantly. Was much easier than I thought!

Raymond – USA

Great experience – units worked straight out of the box – just needed plug in cables and we were done. I also like the possibility to enable jumbo frames, while we do not have a need for this feature at the current moment it’s great to have this option.