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5-4-3 Rule?

Discussion in 'Networks' started by Hello World, Oct 4, 2005.

  1. Hello World

    Hello World Nibble Poster

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    I still dont get this one...
     
    WIP: CCNA 1, IT Essentials 1(A+)
  2. simongrahamuk
    Honorary Member

    simongrahamuk Hmmmmmmm?

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    No more that 5 cable segments can be used between two nodes (don't let it pass through more than 4 devices defore it gets to destination)

    Any two nodes cannot be connected through more than 4 devices (Switches, routers, etc)

    If you're using coaxial cable (who does anymore?) no more than three segments can have devices attached to them.

    8)
     
  3. simongrahamuk
    Honorary Member

    simongrahamuk Hmmmmmmm?

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    Should have added that if you're using fibre optic cabling throughout the network then the 5-4-3 rule doesn't apply at all.

    8)
     
  4. Boycie
    Honorary Member

    Boycie Senior Beer Tester

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    and also when bridges are involved. They can isolate domains from each other.
     
    Certifications: MCSA 2003, MCDST, A+, N+, CTT+, MCT
  5. tripwire45
    Honorary Member

    tripwire45 Zettabyte Poster

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    I find it helpful to actually draw diagrams of these sorts of things. I can't really understand it when I just read text but a good graphic makes all the difference.
     
    Certifications: A+ and Network+
  6. simongrahamuk
    Honorary Member

    simongrahamuk Hmmmmmmm?

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    You mean something like this ?

    Google is your friend! :biggrin
     
  7. tripwire45
    Honorary Member

    tripwire45 Zettabyte Poster

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    Touche', Simon. :biggrin
     
    Certifications: A+ and Network+
  8. Clyde

    Clyde Megabyte Poster

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    right

    5 segments connected with
    4 repeaters with
    3 segments max having hosts on them, therefore
    2 segments with no hosts and
    1 collision domain!

    remember, this rule is for co-ax or tp cable in half duplex mode. In other words, it don't apply to switched networks
     
    Certifications: A+, Network+, Security+, MCSA, MCSE
    WIP: MCITP

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