THE DIFference
Results 1 to 10 of 10

Thread: THE DIFference

  1. #1
    Junior Member
    Join Date
    Apr 2004
    Posts
    21

    THE DIFference

    Cany someone explain to me what is the difference between router, bridge and switch or if there are some other hardware network things.
    \"Veni,vidi,vici\"

  2. #2
    Senior Member
    Join Date
    Apr 2004
    Posts
    1,024
    A bridge connects two networks at the 2nd (network) layer rather than the 3rd (Transport) layer like a router... A switch connects various computers on the same network. Bridges are all hardware I believe, routers always have some sort of imbedded OS...
    [H]ard|OCP <--Best hardware/gaming news out there--|
    pwned.nl <--Gamers will love this one --|
    Light a man a fire and you\'ll keep him warm for a day, Light a man ON fire and you\'ll keep him warm the rest of his life.

  3. #3
    Regal Making Handler
    Join Date
    Jun 2002
    Posts
    1,668
    Take a look at the thread below, it pretty much explains everything for you with some usfefull links:

    http://www.antionline.com/showthread...network+bridge
    What happens if a big asteroid hits the Earth? Judging from realistic simulations involving a sledge hammer and a common laboratory frog, we can assume it will be pretty bad. - Dave Barry

  4. #4
    Junior Member
    Join Date
    Apr 2004
    Posts
    21
    so if switch connects many computer within the network, so a hub is a switch?
    \"Veni,vidi,vici\"

  5. #5
    Senior Member IKnowNot's Avatar
    Join Date
    Jan 2003
    Posts
    792
    so if switch connects many computer within the network, so a hub is a switch?
    No.

    Think of it like this: a switch is an intelligent hub.

    A hub would connect everything to everything. A hub will look at packets coming and send them to everything on the hub, then what needs it grabs it.

    A switch will look at what is coming in, find where it should go and only send it down that one path.
    " And maddest of all, to see life as it is and not as it should be" --Miguel Cervantes

  6. #6
    Member
    Join Date
    Aug 2004
    Posts
    70
    No. A hub is the prostitute of a network. Basically it just allows traffic to travel from computer to computer without any questions. If you have 20 machines connecting through a 10mbps hub, the signals are transported simultaniously to the server. This slow down the connection as it consumes the bandwidth and also allows for collision of packets. The data cannot be directed in any way via the hub - it simply connects a-b and back again. The data is insecure and packets can be intercepted at any point within the network.

    Switches are more intelligent, allowing the transfer of data from one specific computer to another. Although similar in operation to a hub, the added control allows more security as the packets are not just wandering everywhere, no packet collission and less degredation of bandwidth. They connect computers together via IP addresses or Mac addresses - this is done by the ARP and rARP protcols.

    Switches and routers also allow the assignment of internal IP addresses (NAT or NO-NAT) though the connection of one network to another (internetworking) is the job of a router.

    So:

    Hub: shares traffc on a network: no security, no assignment of addresses, collission a possibility, bandwidth nightmare - basically a carrier

    Switch: Shares traffic intelligently on a network. Connects computers together via IP addresses or Mac addresses. Can assigns IP addresses internally. Is more secure. Stops collissions, bandwidth friendly - bascally a team of loyal carriers

    Router: Shares trafffic intelligently accross networks. Usually connects to a switch or hub. IP config, port forwarding, fireall etc etc. - the team who dispach the team of carriers

    I hope that made sense to you - my hangover prevents my brain from flowing very well today
    # Now if I ever needed inspiration,
    Right about now where I lose my patience,

  7. #7
    King Tutorial-ankhamun
    Join Date
    Jul 2004
    Posts
    897
    Originally posted here by Moissonite

    Switch: Shares traffic intelligently on a network. Connects computers together via IP addresses or Mac addresses. Can assigns IP addresses internally. Is more secure. Stops collissions, bandwidth friendly - bascally a team of loyal carriers
    To my knowledge, switches only look at the Data Link level. They will look at MAC Addresses, but not IP addresses to tell where to send a packet. A Router on the other hand will look at the IP address (if it's a IP router and not some other protocol).

  8. #8
    Senior Member
    Join Date
    Jan 2004
    Posts
    124
    There are Layer 3 Switches that can "see" IP address. They are some kind of hybrid of classic Layer 2 swithc and router.
    Ikalo
    ------
    Make your knowledge your deadliest weapon.

  9. #9
    Senior Member
    Join Date
    Jan 2004
    Posts
    124
    Also, I forgot to mention, bridge is just like it's name says, a bridge between two parts of network that is to farr away for selected medium to reach. We all know that every network has its limits. For example Ethernet can reach only cca 250m on one cable. There comes bridge, it amplifies signal so it can reach another 250m.
    Ikalo
    ------
    Make your knowledge your deadliest weapon.

  10. #10
    Senior Member
    Join Date
    Mar 2004
    Location
    Colorado
    Posts
    421
    Originally posted here by ikalo
    Also, I forgot to mention, bridge is just like it's name says, a bridge between two parts of network that is to farr away for selected medium to reach. We all know that every network has its limits. For example Ethernet can reach only cca 250m on one cable. There comes bridge, it amplifies signal so it can reach another 250m.
    Or it can simply be used to change to a different media type.

    Fiber to copper
    ATM to Ethernet (many ADSL "modems" are simply an ATM bridge)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •