Packet collision on Samba traffic

[Simo Sorce]

On Thu, 5 Apr 2001, Christopher R. Hertel wrote:

> Hang on...
>
> The first thing to figure out is why you are getting so many collisions.
> How many other devices are on this hub?  Why is there are problem between
> Samba and W/98 and not between Samba and W/NT?
>
Well I forgot to tell to check the w98 nic, maybe it is not working
properly.

> If there is a communications problem between the W/98 box and Samba then
> a switch won't help because, on a two-port level, the connection between
> the two devices is roughly equivalent to a crossover cable.

Not with fullduplex, in this mode, theres a wire for tx and a wire for rx
so that collisions cannot happen.

> I don't really understand the description of the symptoms.
>
> Chris -)-----
>
> > A switch + full duplex nics would avoid collisions,
> > anyway collisions are normal (under a certain rate) with hubs (that are
> > topologically identical to an old coaxial cable).
> > Data are generally not lost as when a collision is detected a jamming
> > sequence stop both the nics that are trasmitting and they schedule for
> > retransmission of the whole packet.
> > The side effect is that an overloaded hub (too many machine or too many
> > transfers needed) would slow down the network considerably and this is the
> > reason for the switches exist (they are not an unique domain of
> > collision).
> >
> > Hope this helps.
> >
> > Simo.
> >
> > On Mon, 2 Apr 2001, Nathaniel Pendleton wrote:
> >
> > > I have packets colliding between a Samba server
> > > and Win98 client.  The hub sender/receiver lights blink simultaneously
> > > and the red collision lights as well.
> > >
> > > With Samba-NT4sp6 traffic sender/receiver flash alternately, and no
> > > collision.
> > >
> > > Solutions anyone?
> > > Is data being lost or damaged?
> > > Would a switch solve this?... I doubt it
> > >
> > > PS. Someone advised me to set my win98 client's nic to half-duplex.
> > > The nic (Intel 10/100 Pro) choked at boot.
> > > They also said a switch could fix this.
> > >
> > > -Nathaniel
> > >
> > >
> > >
> > >
> >
> > --
> > Simo Sorce - Linux Systems Consultant
> > E-mail: simo.sorce at polimi.it
> > Tel: +39 0348 7149179 - Fax: +39 02 700442399
> > -----------------------------------------------------------------
> > Be happy, use Linux!
> >
> >
>
>
>

-- 
Simo Sorce - Linux Systems Consultant
E-mail: simo.sorce at polimi.it
Tel: +39 0348 7149179 - Fax: +39 02 700442399
-----------------------------------------------------------------
Be happy, use Linux!