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NetCHEIF Articles

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eladts -jumpgate .

, , 1G.  .


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Ethernet . , . - DSL .

"" (Categories). 5, CAT5, . .


1: 5 (CAT5)

CAT5 " ", . " - : . : , , , .

CAT5 RJ45 RJ45. RJ45 . /DSL RJ45.
RJ45 (NICs), (Hubs), (Switches) (Routers).

CAT5:

  • , CAT5 100 .

  • CAT5 4 8 , 4 .

  • .

  • CAT5 3 :

    • UTP (" Unshielded Twisted Pair) - . .

    • FTP (" Foiled Twisted Pair) - . .

    • STP (" Shielded Twisted Pair) - . .

. TIA/EIA 568A - TIA/EIA 568B. #2 ( ) #3 ( ).

: , . 568A 568B CAT5 .


2: TIA/EIA 568

568A () 3,6 () 1,2. , 568B 1,2 3,6. . , #2 , A B . " 1,3,6. 4,5,7,8 .

, " TIA/EIA 568B.
TIA/EIA 568A , .

 

CAT5 . , , .


3: RJ45

(straight) . . .


4: (4 )

(crossover) : (+) (+) (-) (-). . , ( ). . .


5: (4 )

?

RJ45:

MDI:

. , , , UPLINK/WAN /.

MDI-X: . /, .

: .

, MDI MDI-X , (MDI - MDI MDI-X - MDI-X) . Auto MDI/MDI-X, " - .

:

  • " ( )

  • /ADSL " ( )

  • / " ( /)

  • " ( )

  • UPLINK " ( ) ...  

:  , , . , Auto MDI-X, .  , .

" . (+/-) (: ADSL Alcatel SpeedTouch Home D-Link DL-624 C1).

, " ( + -) . ' '.


6: (4 )

( / +/-), .


7: (4 )

, CAT5 .

Gigabit Ethernet CAT5E

CAT5 10Mbps ( ) - 100Mbps, 1000Mbps, 1Gbps ( Gigabit Ethernet). CAT5E ( CAT5 Enhanced). CAT5 - CAT5E 8 4 .

CAT5E .


8: (8 )


9: (8 )

: CAT5E 568A 568B. , CAT5E .

, - CAT5E . CAT5E , ...


10: (8 )


11: (8 )

?

, :

  • 2 100 ?

    CAT5/CAT5E 100 . , . , - 100 (Repeater) .

    . . (, , ) ( Passive Hub ). .

     

  • ? ?

    , . DSL , .

    , . , . ( ) , , .

     

  • 8 4?

    8 Gigabit (" 1000Mbps). 10/100Mbps, - 4 , Ethernet . +/- (: ).


    12: " (8 )

    , -8 CAT5/CAT5E :

    • Gigabit ( CAT5E )

    • 10/100Mbit

    • 10/100Mbit +

    • (!!?!!)

     

  • (STP) (UTP)?

    . , , . , " . , - .

     

  • ? '' ?

    , , . - - . , - RJ45 . - 10 " , , ( ), ( ), - RJ45 , .
    ZAP, .

     

  • () ?

    ( ) - RJ45 , " ". RJ45 / - LINK . ( UPLINK) ( Auto MDI/MDI-X ).
    , () , .

, - Link . , , .


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This Article is based in part on cabling information from Linksys' website.

eladts - jumpgate, 2002 - 2004, .