Packet collision on Samba traffic
Christopher R. Hertel
crh at nts.umn.edu
Thu Apr 5 06:30:15 GMT 2001
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?
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.
I don't really understand the description of the symptoms.
> 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
> Hope this helps.
> 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!
Christopher R. Hertel -)----- University of Minnesota
crh at nts.umn.edu Networking and Telecommunications Services
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