>At 05:23 PM 8/23/01, Howard C. Berkowitz wrote: >> >Most are full duplex, so in those cases, no you shouldn't.. >> > >> >Brian "Sonic" Whalen >> >Success = Preparation + Opportunity >> > >> > >> >On Thu, 23 Aug 2001, Wright, Jeremy wrote: >> > >> > > Can you have collisions on a serial link? Thanks again. >> > >> >> >>I'm in general agreement, but be aware that you might run into IBM >>BSC or SDLC networks that use polled multidrop on half-duplex >>facilities. Rare now, but you might see them on things like >>automatic teller machines, point-of-sale terminals, etc. -- those >>being critical business applications that work, so no one wants to >>fiddle with them. >> >But they still wouldn't see collisions, which is an Ethernet concept. I >used to know BISYNC and could explain how the devices take turns, but I >sure can't remember any more! ;-) It wasn't akin to CSMA/CD or CSMA/CA, >however. ---------------------------------------> from controlling host (simplex) >The answer to the question is that you should not see collisions on a >serial link. Cisco uses a "template" for the output of show interface >commands that does not remove statistics that are irrelevant to the >interface being shown. So show int s0 does include a collision count but >it's always zero. > >As a CCIE (even a CCNA?! ;-) you would be expected to know to ignore that >count unless you happened to see a non-zero value, in which case you would >scratch your head, but not be expected to explain it, since it would be >completely illogical. > >Priscilla >________________________ > >Priscilla Oppenheimer >http://www.priscilla.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=17085&t=17085 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
