1000BaseT on CAT-5?

w^rl0rdw^rl0rd Posts: 329Member
How does 1000BaseT use CAT-5 cabling? I thought CAT-5 had a max. bandwidth of 100Mbps.

Comments

  • RussSRussS Posts: 2,068Member
    You can wire Cat5 for gigabit traffic, but it is not rated as such.
    www.supercross.com
    FIM website of the year 2007
  • w^rl0rdw^rl0rd Posts: 329Member
    So, how do you do this? How else do you wire Cat- 5 UTP?
    (802.3ab)
  • jlambertjlambert Posts: 89Member ■■□□□□□□□□
    instead of only using 2pairs you use 4. This is called Cat5e cable.
  • RussSRussS Posts: 2,068Member
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    www.supercross.com
    FIM website of the year 2007
  • JDMurrayJDMurray Certification Invigilator Surf City, USAPosts: 11,449Admin Admin
    jlambert wrote:
    instead of only using 2pairs you use 4. This is called Cat5e cable.
    Not quite. CAT5 and CAT5e (enhanced) are the same thing, except CAT5e has a more defined product specification (ANSI/TIA/EIA 568A-5). CAT5e has many operational characteristics that are standardized by 568A-5 that were never defined by plain CAT 5 (PS-NEXT, ELF-NEXT, PS-ELFNEXT, delay skew, etc.).

    CAT5 and CAT5e look alike and are wired exactly the same. In fact, most of the CAT5 cable made today conforms to the 568A-5 standard, although it is not rated as such. CAT5e is also completely backward compatible with current CAT5 equipment.

    You might consider CAT6 cable if your lines are to remain installed for many years. You don't want to install cable that'll just have to be upgraded in 18-36 months when newer, higher bandwidth standards are released.
  • RussSRussS Posts: 2,068Member
    Only Cat5e around here so it is a moot point.
    www.supercross.com
    FIM website of the year 2007
  • jlambertjlambert Posts: 89Member ■■□□□□□□□□
    802.3ab
    Specifies 1000BaseT Gigabit Ethernet over Cat 5e UTP cabling.
    - Utilizes all four pairs of cable wires for transmission.
    - Maximum segment length is 100 meters.

    So how i'm i wrong? i said it uses all pairs and is called Cat5e.
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