media network connecting computers and the Internet, among others:ROUTER
Router works in a similar way to the switches and bridges. The difference is, the router filter (filter) traffic data. Filtering is done not by looking at the data packet addresses, but by using a specific protocol. The router appears to address the need to divide the network is logically not physically.
An IP router can divide a network into multiple subnets so that only traffic destined for certain IP address that can flow from one segment to another segment. You may be confused with the above definition, but for easy to remember, you use a router when connecting computer networks to other networks. This network can be a private network (LAN / WAN) or public network (internet).
Switch
SwitchBiasanya switches are widely used for LAN switches star.Dan token is used as a repeater / amplifier. Serves to connect the UTP cables (Category 5/5e) computers with one computer to another. The switches are usually present routing, routing itself serves to jump stone to make connections with other computers in LAN.
Is the central hub for star topology and allows computers to be added or removed at the network with relative mudah.Kapabilitas provided separately central hub star topology and allows the computers to be connected. In computer networks we need a hub that serves to combine multiple computers into one network group. Maybe if we just want to connect two PCs we will only need a UTP cable with a crimping with cross cable. But what about the 10 PC? or 20 PC? this is where the hub function to work where it will komputer2 dihubungkin with UTP Straight Cable which is plugged into port2 on the hub and set up the IP address of the same network, then we will be in a computer network consisting of more than 2 PCs.
Inter-hub also can be interconnected, this is referred to as chaining through the uplink port. Given this, it can improve network performance that is able to isolate a computer from lain.Hub computer will send packets to all computers connected to the hub but the switch will only pass the packet to the destination address. Because the switches have the ability to detect the address of the computer that will be addressed. Clearly here switches safer and faster.
At the same switch can handle more than one connection. Of course with more capabilities such as this switch is more expensive price than the price of the hub. With the hub or switch as a liaison so many computers can be interconnected. When without a hub or switch to connect two or more computers we use BNC connectors. Low speed. But with the relationship using the RG45 and the Ethernet card that supports as well as the ability of the hub or switch that support so we can get more speed). Hub is a component in a network that connects the repeater (to work on Physical Layer) is used to overcome the limitations (distance, signal quality) of a physical network segment.
Switches and hubs is an important component in the network. Both function to transfer data in a network.
Then what is the difference between switch and hub? Although both have the same shape and has the same function, but both have a very fundamental difference.
Hub can only happen one data transfer process at a time. This happens because in a network, before sending the data will be preceded by checking whether there is transmission of data from other parties or not. If yes, then the data transmission will be delayed because if there are 2 parties that transfer data simultaneously, there will be a collision between data (collision).
Another with a switch. Switch allows data transfer process more than one at a time. This is because the switches have a collision control in the faithful port. In contrast to the hub which has only one collision control.
BRIDGE
BRIDGE - working on the Data Link layer (2) Bridge set (through filtering or forwarding) data frames per segment, so that if w / s 1 will send the data to w / s 2, the frame will not be forwarded (forward) to segment 2. This resulted in the load path of each segment to be optimal, and overhead traffic on each segment can be reduced ..
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