To be pedantic, a collision is an event which occurs over the wires/fibre.
If congestion happens internally in a switch/router it may be a problem but
it is not in network speak a collision.
> ----------
> From: woody[SMTP:[EMAIL PROTECTED]]
> Reply To: woody
> Sent: 11 May 2000 10:22
> To: [EMAIL PROTECTED]
> Subject: Re: CSMA/CD : full duplex
>
> Further to my original post...
>
> It is possible to get collisions on a Full Duplex segment. Transmission
> from the switch towards the destination is a shared bandwidth domain (with
> other originating hosts transmitting towards the same destination). As
> such
> collisions may occur on the transmit from the switch towards the
> destination. CSMA/CD is used to overcome this. This may be done
> internally
> within the switch (buffering of frames etc) but it is still there...
>
> Keith
>
> ""Joe Martin"" <[EMAIL PROTECTED]> wrote in message
> 8fbq4s$80t$[EMAIL PROTECTED]">news:8fbq4s$80t$[EMAIL PROTECTED]...
> > Full duplex transmission requires a point to point connection between
> two
> > devices. This is achieved using a switch. Since the connection is
> between
> > two and only two devices at a time, this allows them to transmit and
> receive
> > at the same time. Thus a collision would never occur and CSMA/CD is
> > unnecessary.
> >
> > JOE
> > CCNP, CCDP, and a few other things...
> >
> >
> > "Dan West" <[EMAIL PROTECTED]> wrote in message
> > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> > > Sorry to ask such a simple question--but the CCNA book
> > > is still unclear as to what's going on.
> > >
> > > Half-duplex ethernet uses CSMA/CD for arbitration on
> > > the link. Does full duplex use it as well for
> > > arbitration? The book makes it sound like if you are
> > > running full-duplex that the CSMA/CD is not necessary.
> > > It mentions half-duplex looping a duplicate frame onto
> > > the recieve wire from the transmit wire.
> > >
> > > Thanks.
> > >
> > > __________________________________________________
> > > Do You Yahoo!?
> > > Send instant messages & get email alerts with Yahoo! Messenger.
> > > http://im.yahoo.com/
> > >
> > > ___________________________________
> > > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html
> > > FAQ, list archives, and subscription info: http://www.groupstudy.com
> > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
> > > ---
> >
> >
> > ___________________________________
> > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html
> > FAQ, list archives, and subscription info: http://www.groupstudy.com
> > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
> > ---
>
>
> ___________________________________
> UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html
> FAQ, list archives, and subscription info: http://www.groupstudy.com
> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
>
___________________________________
UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html
FAQ, list archives, and subscription info: http://www.groupstudy.com
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
