maximum cable length

ethernet maximum cable length - network max lengths
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Maximum cable lengh for ethernet depends on what kind of ethernet you are talking about!  Here are some details on the most popular kinds of ethernet.  (UTP = unshielded twisted pair)
Gigabit Ethernet (over copper), 1000baseT
Speed:
1000 Mbps
Max Len:
100 Meters
Cable:
UTP, RJ-45 connectors
Fast Ethernet, 100baseT 
Speed:
100 Mbps
Max Len:
100 Meters
Cable:
UTP, RJ-45 connectors
Twisted Pair Ethernet, 10baseT 
Speed:
10 Mbps
Max Len:
100 Meters
Cable:
UTP, RJ-45 connectors
Thin Ethernet , 10 base 2 
Speed:
10 Mbps
Max Len:
185 Meters
Cable:
RG-58 type coax, 50 ohm impedance
Thick Ethernet, 10 base 5 
Speed:
10 Mbps
Max Len:
500 Meters
Cable:
RG-58 type coax, 50 ohm impedance
Ethernet to Fiber
Ethernet to Fiber media converters are starting to come down in price - they can be found for under $150.  When 100Meters is not enough distance, an Ethernet to fiber media converter can be placed on each end making the maximum distance something like 40Km(See the Example here ).  Another use for fiber is electrical insulation.  Some people like to run cables underground between homes.  If you run CAT5 cable, the homes have different 'ground potentials' and you will burn out network card durring any electrical storm.  The solution is fiber!  Run fiber betweeen the homes or run a pair of fiber converters on one end of the cable with a short fiber run.  This will electrically separate the two homes.
Any other questions about maximum cable length for ethernet or network toplogies can be directed to the forums 
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77 comments
ethernet maximum cable length - network max lengths
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And If I have a switch? by kraven - 07/06/2002 05:19:00
Re: And If I have a switch? by Foxxz - 19/07/2002 10:45:00
Re: And If I have a switch? by imbogo - 09/09/2004 08:05:00
Re: And If I have a switch? by whoohoo - 08/05/2006 18:13:00
Re: And If I have a switch? by dork - 20/01/2003 15:10:00
Re: And If I have a switch? by Thomas - 27/02/2005 05:41:00
Re: And If I have a switch? by Rick - 25/03/2005 23:16:00
Re: And If I have a switch? by mark - 25/02/2006 14:41:00
reply by dark_angel - 12/06/2006 21:40:00
reply by dark_angel - 12/06/2006 21:40:00
memmememe by mr majika - 31/10/2002 10:57:00
Re: memmememe by Toughguy - 27/09/2006 10:51:00
Maximum Cable Length using a router. by njager - 10/12/2002 20:52:00
Re: Maximum Cable Length using a router. by Teresa - 04/04/2004 04:43:00
Cable Length using a Linksys gateway router. by Noel - 28/05/2004 22:50:00
Re: Maximum Cable Length using a router. by PIG - 22/11/2004 19:47:00
Re: Maximum Cable Length using a router. by Noel - 25/09/2006 01:08:00
10 vs 100 by Pfr - 20/01/2003 13:30:00
Cat 5 resistance? by Don Donachy - 27/01/2003 11:54:00
Re: Cat 5 resistance? by Mukul - 09/04/2003 06:43:00
Re: Cat 5 resistance? by anurag - 21/05/2003 16:33:00
Re: Cat 5 resistance? by Dave - 02/06/2003 21:14:00
Re: Cat 5 resistance? by Clarence - 04/07/2003 12:04:00
Re: Cat 5 resistance? by Kevin - 05/07/2003 10:52:00
Re: Cat 5 resistance? by ken lam - 19/07/2003 15:16:00
Re: Cat 5 resistance? by ken - 29/07/2003 09:11:00
Re: Cat 5 resistance? by cat6e guru - 06/09/2003 13:43:00
Re: Cat 5 resistance? by forbin - 26/03/2004 13:26:00
Re: Cat 5 resistance? by forbin - 26/03/2004 13:28:00
Re: Cat 5 resistance? by Lee - 04/06/2004 18:58:00
Re: Cat 5 resistance? by ashwin - 29/06/2004 15:38:00
Re: Cat 5 resistance? by Eimsr - 02/10/2004 11:57:00
Re: Cat 5 resistance? by Mahendra Joshi - 18/05/2005 00:26:00
Re: Cat 5 resistance? by Ben - 04/11/2003 11:41:00
Only solution I've found by Tim - 08/09/2003 06:17:00
Re: Only solution I've found by Mike - 17/05/2004 15:34:00
Understanding Networks, Equipment, and the basics and Limits by cabletech - 30/09/2003 03:57:00
Wrong type of cable under by Mats Karlsson - 06/11/2003 08:05:00
can switch serve as a repeater? by banmurphy - 28/07/2004 04:05:00
Re: can switch serve as a repeater? by netgoof - 28/07/2004 04:56:00
Re: can switch serve as a repeater? by antz - 05/09/2005 06:31:00
Re: can switch serve as a repeater? by No 1 - 20/11/2005 10:07:00
please tell me how many computers can be connected in a network using different types of cables by mohan - 02/12/2005 00:06:00
network card as repeater by annoyed - 02/09/2004 07:59:00
Re: network card as repeater by Eimsr - 02/10/2004 12:02:00
Re: network card as repeater by Eimsr - 02/10/2004 12:05:00
cable modem by joe - 14/10/2004 20:31:00
Re: cable modem by aks;dfj - 20/12/2004 15:37:00
MY DISTANCE IS ONLY 46M by chris - 04/11/2004 05:10:00
Re: MY DISTANCE IS ONLY 46M by CHuck - 10/08/2005 20:06:00
Re: MY DISTANCE IS ONLY 46M by Noy - 10/01/2006 21:12:00
running a cat5 line by GregB - 07/01/2005 15:45:00
Re: running a cat5 line by Mickey - 17/01/2005 03:49:00
Re: running a cat5 line by Ake - 28/02/2005 13:12:00
Re: running a cat5 line by Moorthy - 01/03/2005 19:19:00
What exactly does it mean? by Waterns - 26/02/2005 01:34:00
Re: What exactly does it mean? by Chuck - 10/08/2005 20:08:00
connecting ends to Cat5 cable by Big Charlie - 01/04/2005 11:45:00
golf club networking by Ryan M - 04/05/2005 09:53:00
Re: golf club networking by Chuck - 10/08/2005 20:10:00
Re: golf club networking by Shin Lee - 23/08/2005 12:07:00
Edimax 4-port router + 16 metre cable + Thomson tcm305 cable modem by Burty - 07/12/2005 06:23:00
hi asking? by amr - 13/02/2006 04:01:00
Re: hi asking? by abhishek - 02/05/2006 13:19:00
Re: hi asking? by abhishek - 02/05/2006 13:24:00
cable problem if more than 25 feet by Vanna - 04/05/2006 15:11:00
Re: cable problem if more than 25 feet by SteveT - 02/06/2006 07:24:00
Re: cable problem if more than 25 feet by kathy - 10/06/2006 20:25:00
Re: cable problem if more than 25 feet by adam - 23/10/2006 01:20:00
Re: cable problem if more than 25 feet by adam - 23/10/2006 12:14:00
Posted by adam
23/10/2006 12:14:00.
Re: cable problem if more than 25 feet
In response to my own question.
I did some digging and found a number of other cat5 cables i had lying around and followed their color configuration and everything works now at 150'.
So to clarify in color (a$$uming these are the colors you have).
From top to bottom holding the securing tab away from you:

orange/white
Orange
green/white
blue
blue/white
green
brown/white
brown

I used the same configuration at both ends. Hopefully that helps..and hopefully I did that correctly; but everything's working here with distance of ~150'.
reply
Re: cable problem if more than 25 feet by adam - 23/10/2006 12:21:00
Posted by adam
23/10/2006 12:21:00.
Re: cable problem if more than 25 feet
I wish i could edit my posts.....
anyway the color sequence i wrote down is top to bottom holding the connector in your right hand and pushing the cable in from the left. again with the tab facing away (on the backside). Writing this for people like me who are much better with a picture and need more in depth word description.
reply
30m slow xbox connection? by aaronp - 23/06/2006 13:45:00
what determines the maximum length of calbes by Craig - 23/06/2006 14:36:00
Ethernet 250 ft extension by Rolland - 17/07/2006 20:52:00
Re: Ethernet 250 ft extension by Bradley A+, MCP - 23/07/2006 21:58:00
Re: Ethernet 250 ft extension by Rolland - 27/07/2006 16:26:00
Re: Ethernet 250 ft extension by Rolland - 30/10/2006 09:25:00
Posted by Rolland
30/10/2006 09:25:00.
Re: Ethernet 250 ft extension
Info for Others....Finally got this to work...I bought a Compex WP11b+ Wireless AP w/POE Kit on ebay. This has a powered injector on the entry end an an extractor on the wireless end.....Works Great. Thanks for all the imput......Rolland
reply
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