nanog mailing list archives
Re: fast ethernet limits
From: Mikael Abrahamsson <swmike () swm pp se>
Date: Sat, 11 Jan 2003 09:10:12 +0100 (CET)
On Fri, 10 Jan 2003, blitz wrote:
100 meters is supposedly the limit for ethernet, and "assuming" a 12' floor, your'e around 24 feet over spec.
100 meters is primarily a "timing limit" for half duplex, ie if you're running half duplex, how large can your broadcast domain be before you risk losing small packets due to the collission not reaching all speakers on the wire (and this counting the max number of repeaters in a broadcast domain). 100/half will do padding of small packets to achieve just this effect. I've seen 170meter CAT5 100 meg full duplex links working just fine. Of course, as stated before, it's an interference thing, if you have a lot of noise around the wiring you'll shorten the usable length. Of course, this is a ethernet chipset issue, but there are definately chipsets out there capable of electronically driving links much more than 100 meters just fine. -- Mikael Abrahamsson email: swmike () swm pp se
Current thread:
- Re: fast ethernet limits, (continued)
- Re: fast ethernet limits Måns Nilsson (Jan 14)
- RE: fast ethernet limits ed (Jan 10)
- RE: fast ethernet limits Robert A. Hayden (Jan 10)
- RE: fast ethernet limits Kristian P. Jackson (Jan 10)
- Re: fast ethernet limits Jorge Hernandez (Jan 10)
- Re: fast ethernet limits K. Scott Bethke (Jan 10)
- Re: fast ethernet limits Scott Granados (Jan 10)
- Re: fast ethernet limits Joel Jaeggli (Jan 10)
- Re: fast ethernet limits Brian (Jan 10)
- Re: fast ethernet limits blitz (Jan 10)
- Re: fast ethernet limits Mikael Abrahamsson (Jan 11)