But they won't let you get IEEE 802.3 for free right now! It's been updated to the 2002 edition. I can understand them not letting you get that edition for free for the first six months, but I'm mad that you can't get the 2000 edition any more either. I think they must be worried that everyone would go for the free one, and that could be a problem if vendors, especially, were still implementing to the old version.
But hopefully this situation will be remedied soon and we will be able to get the 2002 eidtion for free. Regarding the question about learning Manchester encoding, it is quite simple, and it's also not very relevant to anything "real," but I did cover it in my Ethernet Troubleshooting paper at: http://www.certificationzone.com Priscilla At 05:51 AM 5/20/02, Steven A. Ridder wrote: >Here's the address for the 802.x documents from IEEE: > >pad >pad >pad > >http://standards.ieee.org/getieee802/ > >-- > >RFC 1149 Compliant. >Get in my head: >http://sar.dynu.com > > >""Brian Hill"" wrote in message >[EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > Priscilla Oppenheimer wrote: > > > > > > The IEEE annex that covered full-duplex (802.3x) probably > > > didn't mention > > > slot time. That annex was rolled into the 802.3 2000 edition, > > > however, > > > which of course does cover slot time since it still covers > > > CSMA/CD, > > > repeaters, etc. (in addition to full-duplex operation.) > > > > > > > Thanks, I was beginning to think I had bad info on slot time as well. It > > turns out you were saying that all devices that use CSMA/CD (i.e. > > multiaccess), not all Ethernet devices, use the slot time, which is how I > > understood it in the first place, I just misunderstood what you were >saying :( > > > > > > > Well, now we are getting into EE talk. ;-) Everything is analog > > > at some > > > level, isn't it? But an Ethernet repeater works on a Manchester > > > encoded > > > digital signal. (MLT-3 encoding for 100 Mbps). I think your > > > second > > > statement is closest to the truth (that the repeater converts > > > the analog > > > signal into a digital representation and creates a new analog > > > signal). But > > > I don't know the exact details. > > > > Great, that makes perfect sense :) There is that Manchester encoding >again. > > Do you know where I can find good documentation on it? > > > > > > > > I'm sorry I was so punchy in the previous message. > > > > > > > No problem Priscilla :) You guys (and gals) actually cleared up a lot of >old > > misconceptions in this whole long list of stuff, which is great >considering > > that documents on the dirty inner workings of Ethernet are hard to find > > unless you happen to be an IEEE member. :P ________________________ Priscilla Oppenheimer http://www.priscilla.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=44545&t=44408 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
