Broadcast Domains
What is a broadcast domain?
In Ethernet LANs, a broadcast is one-to-all communication, which means that if a node sends a broadcast frame, everybody receives a copy of it.
Collision Domains
In this lesson, we are going to learn what is a network collision domain. How Ethernet Hubs create collision domains and how bridges and switches resolve them. Also, we are going to discuss what is Carrier-sense multiple access with Collision Detection (CSMA/CD).
Copper cabling
Ethernet LANs are most widely built using UTP cables. UTP cable is made of 8 copper wires, grouped together in four twisted pairs. Each pair has a color scheme in which one wire is solid colored and the other one is the same color but striped.
Fiber-Optic Cabling
Fiber-optic cabling is widely used for high-speed Ethernet links over relatively long distances.
Ethernet Physical Layer Standards
Ethernet Physical Layer
As we have already learned, Ethernet is not a single thing, it refers to a family of standards. The ultimate goal of the Ethernet is to act like a single LAN technology even though the data may traverse different types of links (optic
Type of LANs
SOHO LANs
One of the most common local-area deployments is the Small-Office / Home-Office LAN (SOHO). It is a small computer network usually built of one Ethernet switch, one router, and one wireless access point.
Ethernet Technologies Overview
This lesson begins our discussion of Ethernet. We’ll explore how layer 2 networks work and how to configure and manage Ethernet switches. However, first let's take a look at the Ethernet standards.
Router on a stick (ROAS)
Router-on-a-stick (ROAS) is a technique to connect a router with a single physical interface to a switch and perform IP routing between VLANs. From the switch's perspective, this physical link is configured as a trunk port allowing all VLANs that are going to be routed. From the router's perspective, this physical interface is represented as multiple virtual sub-interfaces, one for each VLAN.