What Is A Switch In Networking?

A network switch (or switch) is a network device that performs inactivity bridging (segmentation links) of many networks with transfers based on MAC addresses).

Network switches can be used as a computer connector or router in a limited area, the switch also works at the data link layer, the way the switch works is almost the same as a bridge, but the switch has a number of ports so it is often called a pancaporta bridge (multi -port bridge).

networking switches

Type of Switch

There are several types of switches on the market, which work at Layer 2 and Layer 3 at the OSI layer.

ATM Switch

Asynchronous Transfer Mode is a transfer mode that is arranged in the form of cells. The purpose of asynchronous is the repetition of cells containing information from the user does not need to be periodic.

ISDN switch

ISDN (Integrated Services Digital Network) Switch, also known as Frame relay switch over ISDN, which is usually found in Service Providers works like a switch, but has a difference, namely the interface used is an ISDN card or ISDN router.

DSLAM Switch

A Digital Subscriber Line Access Multiplexer (DSLAM, often pronounced later) allows line phones to make fast connections to the Internet. This is a network device, located on the telephone exchange of the service provider, which connects several Digital Subscriber Lines (DSLs) customers with high-speed backbone Internet lines using multiplexing techniques. By placing remote DSLAMs in remote locations with telephone exchanges, telephone companies provide DSL services to locations previously out of effective range.

Ethernet switch

An Ethernet Switch is a LAN interconnect device that operates at the data-link layer (layer 2) of the OSI reference model. The switch is basically similar to a bridge, but usually supports a larger number of connected LAN segments and has richer management capabilities. Modern LANs are increasingly replaced by media as the media is activated, by installing Ethernet switches and bridges in place of hubs and repeaters. This logical partition of traffic to travel only during the network segment in the path between the source and destination. This reduces the bandwidth wasted from sending packets to parts of the network that do not need to receive data. There are also benefits of enhanced security (less able users tap-in to other user’s data), better management (ability to control who receives what information (ie Virtual LAN) and to limit the impact of network problems), and the ability to operate several links in full duplex (more than half duplex needed to access together)

Uplink port

An uplink port is a port on a hub or [[network switch] | switch]] that can be used to connect the hub / switch with other hubs on an Ethernet technology-based network. By using an uplink port, hubs can be stacked together to form a larger network using inexpensive Unshielded Twisted Pair cables. If indeed the hub that is used does not have an uplink port, then we can use UTP cables that are arranged in a crossover manner.

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