The basic objective of this article is to know about Cisco Network Layers. Distribution Layer networks are usually linked in a incomplete network topology. This design offers abundance unnecessary routes to make sure that the network can wait active after a failure. When the Distribution Layer switches are located in the similar wiring closet, they are interrelated using Gigabit Ethernet cables. When the network devices are divided by longer distances a fiber connection is used. Devices that support numerous high rapidity fiber links can be incredibly exclusive, so additional planning is required to guarantee that adequate fiber ports are accessible to present the required bandwidth and accessibility.