difference between hub, router,switch???

Question

difference between hub, router,switch???

Answer 1

Difference Between Switch And Router

Answer 2

Difference Between Router And Switch

Answer 3

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the basic function of a hub is to forward traffic to all the ports, but switches after learning the mac address, will forward unicast traffic to only the port in which that mac address is learned. switches will forward unknown unicast,broadcast and multicast traffic to all the ports just like in hubs. so only difference in forwarding is for traffic send to address which are already learned. switches are more intelligent than hubs because of the capabilities of mac address learning and forwarding based on this learned mac address

Answer 4

hub n. In a network, a device joining communication lines at a central location, providing a common connection to all devices on the network. The term is an analogy to the hub of a wheel. See also active hub, switching hub. switch n. 4. In networking, a device capable of forwarding packets directly to the ports associated with particular network addresses. See also bridge, multilayer, router.

Answer 5

complex subject. query over yahoo and bing. that will could help!

Answer 6

Check this best difference in Tabular Form



http://dash10mesh.blogspot.in/2013/03/difference-between-hub-switch-and-router.html

Answer 7

Hub is a point or socket for Internet connection for the computer.

Router is a device for alternating between two or more computers.

Switch is to switch between two lines for broadband connection and telephone connection.

Details can be checked on net.

Answer 8

A router is a computer networking device that buffers and forwards data packets across an internetwork toward their destinations, through a process known as routing. Routing occurs at layer 3 (the Network layer e.g. IP) of the OSI seven-layer protocol stack.



http://en.wikipedia.org/wiki/Router



1)A switch is a device for changing the course (or flow) of a circuit. The prototypical model is a mechanical device (for example a railroad switch) which can be disconnected from one course and connected to another. The term "switch" typically refers to electrical power or electronic telecommunication circuits. In applications where multiple switching options are required (e.g., a telephone service), mechanical switches have long been replaced by electronic variants which can be intelligently controlled and automated.



The switch is referred to as a "gate" when abstracted to mathematical form. In the philosophy of logic, operational arguments are represented as logic gates. The use of electronic gates to function as a system of logical gates is the fundamental basis for the computer—i.e. a computer is a system of electronic switches which function as logical gates.



http://en.wikipedia.org/wiki/Switch



2)A network switch (or just switch) is a networking device that performs transparent bridging (connection of multiple network segments with forwarding based on MAC addresses) at up to the speed of the hardware. Common hardware includes switches, which can connect at 10, 100, or 1000 megabits per second (Mbit/s), at half or full duplex. Half duplex means that the device can only send or receive at any given time, whereas full duplex can send and receive at the same time. The use of specially designed expansion also makes it possible to have large numbers of connections utilizing different mediums of networking, including Ethernet, Fibre Channel, ATM, 802.11, to name frequently used technologies.



http://en.wikipedia.org/wiki/Network_switch



Hub



A common connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. A hub contains multiple ports. When a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.



http://www.webopedia.com/TERM/h/hub.html



Hope this helps a little!!!

Answer 9

What's the difference between a Hub, a Switch and a Router?



In a word: intelligence.



Hubs, switches, and routers are all devices which let you connect one or more computers to other computers, networked devices, or to other networks. Each has two or more connectors called ports into which you plug in the cables to make the connection. Varying degrees of magic happen inside the device, and therein lies the difference. I often see the terms misused so let's clarify what each one really means.



•



A hub is typically the least expensive, least intelligent, and least complicated of the three. Its job is very simple: anything that comes in one port is sent out to the others. That's it. Every computer connected to the hub "sees" everything that every other computer on the hub sees. The hub itself is blissfully ignorant of the data being transmitted. For years, simple hubs have been quick and easy ways to connect computers in small networks.



A switch does essentially what a hub does but more efficiently. By paying attention to the traffic that comes across it, it can "learn" where particular addresses are. For example, if it sees traffic from machine A coming in on port 2, it now knows that machine A is connected to that port and that traffic to machine A needs to only be sent to that port and not any of the others. The net result of using a switch over a hub is that most of the network traffic only goes where it needs to rather than to every port. On busy networks this can make the network significantly faster.



A router is the smartest and most complicated of the bunch. Routers come in all shapes and sizes from the small four-port broadband routers that are very popular right now to the large industrial strength devices that drive the internet itself. A simple way to think of a router is as a computer that can be programmed to understand, possibly manipulate, and route the data its being asked to handle. For example, broadband routers include the ability to "hide" computers behind a type of firewall which involves slightly modifying the packets of network traffic as they traverse the device. All routers include some kind of user interface for configuring how the router will treat traffic. The really large routers include the equivalent of a full-blown programming language to describe how they should operate as well as the ability to communicate with other routers to describe or determine the best way to get network traffic from point A to point B.

Answer 10

Hub and Switches are used over a Local Area Network (LAN). They interconnect different machines on the same LAN. The difference between them is that the hub "repeats" any message on the whole LAN, besides the switches tries to separate the LAN into several "collision domains" (each one on a single port of the switch), and sends the message only to the required machines.



A router is used to interconnect LANs. A rooter between two LAN has two interfaces, one on each LAN. The router is used as a gateway when a machine from the LAN 1 wants to communicate with a machine on the LAN 2.

Answer 11

Hi there! the switch is an evolution from the hub, and so fouth. Here we go hope it all makes sense:

Hub

Hub a device on a network that acts as a concentrator imagine you have 5 cables coming from 5 different computers and they all need to go to a server to use a particular pogram what happens is that the Hub acts as a concentrator passing the information on to all parties connected until you reach the party you have requested. It is also known as a simple device because you cannot access it and give it commands, also known as a bridge, and are not comonly used much on



Switches "Like the name says it switches the information"

They are a little more inteligent in that they can be accessed and given commands as to what they should do with various information packets they receive like where to send them to and what port = outlet to use to send it to, so they are not completely dumb and there are various variations of switches look up "OSI" on the net this will help explain. The first switches apeared in the telecoms industry



Router "As the name says it routes information"

This is a device commonly used to link one network with another network in a building or to link various buildings or nations or our entire planets Internet, and is how the Internet is held together. It is a very intelegent device and are becomming more and more complex. They use many various protocols for many various reasons and have to perform many functions or tasks all at the same time.



Then we have switch routers this is even a more complex animal or piece of equipment and does all of the switch and router functions all in one box and normally much more.



Links

http:www.howstuffworks.com, cisco, alcatel, 3com, dlink all these sites have info on them.

Answer 12

Simple Answer of this question.

Dear

1. Hub ,Switch, Router are extending network device.



2. Hub and Switch are central device which connect multiple system.



3. Hub is cheap then Switch .



4. Router is also extending network device but it conncets different network.

Answer 13

Hub, Switches, and Routers:



Hub

A common connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. A hub contains multiple ports. When a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.



Switch

In networks, a device that filters and forwards packets between LAN segments. Switches operate at the data link layer (layer 2) and sometimes the network layer (layer 3) of the OSI Reference Model and therefore support any packet protocol. LANs that use switches to join segments are called switched LANs or, in the case of Ethernet networks, switched Ethernet LANs.



Router

A device that forwards data packets along networks. A router is connected to at least two networks, commonly two LANs or WANs or a LAN and its ISP.s network. Routers are located at gateways, the places where two or more networks connect. Routers use headers and forwarding tables to determine the best path for forwarding the packets, and they use protocols such as ICMP to communicate with each other and configure the best route between any two hosts.



http://www.cisco.com/.

Answer 14

I'm going to give you a simple answer based on my own understanding, i hope it helps:



Hub - Works on the physical (1st) layer of the OSI model - It does not route data to a computer individually because it does not know where the data is headed. So instead, it sends it each computer and basically "asks" each if the data belogs to them by providing a code from the sender. If not, it goes to the next pc. This process makes it slower than a router or a switch



Switch - This device works on the Data link (2nd) layer of the OSI model and unlike hubs, it knows which computer its supposed to get what because it has a preconfigured access list that records the MAC address for each computer on its segment. This allows it to send the data comming from another computer directly to its destination without having to ask each other pc to find the receipient. This device only is good for a Local Area Network (LAN)



Router - A router its like a switch, however, it understand networking protocols such as TCP/IP or IPX (the ip address that allows you to get on the internet is part of TCP/IP suite). A router its able to communicate with devices on a WAN environtment (such as the internet). It knows where the data can needs to be sent do in order to reach its destination. A router works on the Layer 3 of the OSI model, the Network later.

Answer 15

You need to understand how OSI or TCP/IP layer model works.



Hub: Is only an electrical repeter between their differents ports

Not protocol work is done



Router: You need to work on layer 2 and 3. Layer 3 is IP Protocol. Layer 2 are MAC and LLC on LAN Networks.

Originals LAN don't need Layer 3. (only one segment). Today LANs needs.



Bridge: (not in use today) use only layer 2 (MAC Address)



Switch: Could work only with layer 2 or both with layer a and 3.



The MAC address on a LAN is unique for each station.

The IP address on a LAN is unique for each station.



Router must 'read' MAC address and IP adress to decide what to do



Switch could build a table with the pair IP address and the associated MAC address.

First time you send a packet switch need to read the IP address and build that table. Followings packets will not be processed at layer 3 only will be read their layer 2 address (MAC address). That is faster that doing all the processing.



Today technology allow to use switch in replace of previous devices.

Answer 16

In simple words;



If, you want to share your Internet connection in your home then use a DSL Router (for broadband) or if, you want to just share your files and other stuffs in your home network then use switch.



HUBs has no use these days specially in home environment. The technical difference between them can be understand by above answers.

Answer 17

As you know they all connect computers together on a network. The difference is that a Hub just takes the information coming into each port and sends it back out on ALL of the ports. A switch takes the information coming in from one port, reads it to see what computer its going to and then sends it JUST to the port of that computer. This is much faster as it only sends the information to the computers its destined for, not all of the computers in the network. It preserves bandwidth and also lowers the load on each PC as they don't have to sort through a bunch of data packets not meant for them.



A router is a little different, it's sort of like a hub and a switch or two switches put together. A router has ussually one port that is connected to a backbone, in most cases your internet connection, and several ports that connect to the computers in your local network. The primary reason for a router is that a. it makes your entire home network look like one computer to the internet, reducing the number of IP addresses needed to just 1 and b. it usually includes a firewall etc to prevent unwanted information getting to your computers, it helps cut down on hackers and what not attacking your network. It's called a router because it routes data from one source to multiple computers.

Answer 18

it is a huge topic..... to discuss here.. and im not sure on what level you are talkin abt... so if you just wanna know the basic working and difference between these just google... what is switch what is router or whatever .. and you can get an idea..... as a beginer it might be a little irritating ... but if you go through some of the stuff in cisco press you might be able to understand. all the best ..

Answer 19

A router is a more sophisticated network device than either a switch or a hub. Like hubs and switches, network routers are typically small, box-like pieces of equipment that multiple computers can connect to. Each features a number of "ports" the front or back that provide the connection points for these computers, a connection for electric power, and a number of LED lights to display device status. While routers, hubs and switches all share similiar physical appearance, routers differ substantially in their inner workings.



Traditional routers are designed to join multiple area networks (LANs and WANs).



On the Internet or on a large corporate network, for example, routers serve as intermediate destinations for network traffic. These routers receive TCP/IP packets, look inside each packet to identify the source and target IP addresses, then forward these packets as needed to ensure the data reaches its final destination.



Routers for home networks (often called broadband routers) also can join multiple networks. These routers are designed specifically to join the home (LAN) to the Internet (WAN) for the purpose of Internet connection sharing. In contrast, neither hubs nor switches are capable of joining multiple networks or sharing an Internet connection. A home network with only hubs and switches must designate one computer as the gateway to the Internet, and that device must possess two network adapters for sharing, one for the home LAN and one for the Internet WAN. With a router, all home computers connect to the router equally, and it performs the equivalent gateway functions.



Additionally, broadband routers contain several features beyond those of traditional routers. Broadband routers provide DHCP server and proxy support, for example. Most of these routers also offer integrated firewalls. Finally, wired Ethernet broadband routers typically incorporate a built-in Ethernet switch. These routers allow several hubs or switches to be connected to them, as a means to expand the local network to accomodate more Ethernet devices.



In home networking, hubs and switches technically exist only for wired networks. Wi-Fi wireless routers incorporate a built-in access point that is roughly equivalent to a wired switch.

Answer 20

hub is the simple switch .

router is used at network layer and it used at wan

switch is intelligent device

Answer 21

a switch does "smart" routing

sends the packet ONLY to the computer its meant for



while a hub sends the packet to every computer on the hub





try this, go to your favorite search engine and type in



"differences between hubs and switches"



and you will back THOUSANDS of web sites that explain it along with pictures



dougc

Answer 22

hub = hub hota hai...

router = router hota hai...

switch = switch hota hai...

but

all use in computer