Routers are network devices that are used to connect multiple networks, either the same or different networks in terms of technology as it connects the network that uses a bus topology, Star and Ring. The router has at least two network interfaces.
In a previous post about the techniques known subneting we mentioned that the connection between the network (the network with different IP subnets) can only occur with the help of the Router.
Understanding the router according to Wikipedia
The router is a device that sends data packets through a network or the Internet to the destination, through a process known as routing. The process of routing occurs at layer 3 (network layer such as the Internet Protocol) stack of the OSI seven-layer protocol.
The router serves as a liaison between two or more networks to carry data from one network to another. Routers differ from switches. Switches are connecting multiple devices to form a Local Area Network (LAN).
As an illustration of the different functions of routers and switches is a street, and the router is the link between road. Each house is on the road that has an address in a particular order. In the same way, a switch connects various devices, where each instrument has its own IP address on a LAN.
Routers are very widely used in technology-based network protocol TCP / IP, and the router type is referred to as an IP Router. In addition to IP Router, there is another AppleTalk router, and still there are several other types of routers. Internet is a prime example of a network that has a lot of IP routers.
Routers can be used to connect many small networks into a larger network, called the internetwork, or to divide a large network into several subnetworks to improve performance and simplify management. Routers are also sometimes used to mengoneksikan two networks that use different media (such as wireless routers in general than he can connect a computer with a radio, it also supports connecting a computer with a UTP cable), or different network architectures, as well as from Ethernet to Token Ring.
The router can also be used to connect LANs to a telecommunications service as well as the telecommunications leased line or Digital Subscriber Line (DSL). Routers used to connect a LAN to a leased line connections such as T1, or T3, commonly referred to as an access server. Meanwhile, the routers used to connect the local network to a DSL connection is also called the DSL router. These types of routers generally have a firewall function to perform packet filtering based on source address and destination address of the package, although some routers do not have it. Router that features packet filtering is also called the packet-filtering routers. Routers are generally block traffic transmitted broadcast data so as to prevent a broadcast storm that can slow network performance.
The workings of the router
The main function is to route packets Router (information). A Router has routing capabilities, which means that routers can intelligently route knowing where the information (packet) will be passed, whether intended for other hosts on a network or different networks.
If the packets destined for the host on another network then the router will forward it to the network. Conversely, if the packets destined for the host that a network then the router will block the outgoing packets.
Examples of Router
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| MikroTik RB750 |
Cisco Router is a name familiar, but on the other hand there is a name that began familiar, namely Mikrotik Router. MikroTik offers ease of configuration and reliability features with a relatively cheap price.
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