IDF usually connects to MDF via fiber optic cables for greater length and faster speeds. at workplace, IDF is a smaller room with fewer devices (usually switches) or IDF can be a rack mounted (lifted) on the wall out of reach of public access.

Estoy realizando un enlace troncal por fibra óptica utilizando MiniGbic Cisco SMD

En esta oportunidad describiré con cierto detalle acerca del cableado que usamos comúnmente en nuestras redes de datos que actualmente nos permite conectar físicamente entre diferentes dispositivos de red hasta el usuario final. Asimismo, como un añadido, una mención sobre el cable consola que nos permitirá conectarnos a los dispositivos de red (especialmente routers …

Hello. I have a project work where we need to implement LAN with WiFi access for a new building (3 floor; ground floor has equipment room) with 400 hosts. I've tried drawing a diagram. But i'm not whether this is suitable for this question or need routers for each floors.

Typical campus networks are engineered with oversubscription. It is not generally practical to provide line rate for every port upstream from the access-to-distribution switch, the distribution-to-core switch, or even for core-to-core links. Even though bandwidth capacity has increased to 1 Gbps, multiples of 1 Gbps, and even 10 Gbps, it is still impractical to provide enough …

The part I'm having difficulty understanding is when he starts to talk about "Tx+ / Tx- / Rx+ / Rx-". I was wondering if anyone knew what the "+'s and -'s" mean and could explain this to me or show me where I could go to find out more information on this.

From CLI, how to tell if the connected fiber optic is SM or MM?

"Be aware that the only way to get out of the auth-fail VLAN is reauthentication initiated from the switch, through an Extensible Authentication Protocol over LAN Logoff (EAPoL-Logoff) command from the supplicant, or through a link down or up event. Note that if you do perform reauthentication, reauthentication always returns to the first method (MAB). 1"

Physical network is just a physical network ; Connecting 2 hosts to a switch , connecting your PC to your ISP modem , the Data racks MDF , IDF or some data center switches you see through your eyes are examples of physical network ,

The real question is; where would I implement a core layer? Between building. It is simple as that. A good example is a large company or campus like a university. Or I guess, a better example would be is if you have two buildings that have an MDF (Main Distribution Facility/Frame, aggregating other IDF's between floors.