From: Tom Young (gitsyoung@xxxxxxxxxxx)
Date: Sun Jul 28 2002 - 06:15:07 GMT-3
Karl
You are wrong, if I want to connect a computer with a
router's ethernet port directly, It will be a crossover
cable, right?
Tom
--- Karl Young <kaelwyoung@netscape.net> $+$i$N%a%C%;!<
%8!'
> The Rule I have always used is this : If you have
> two of the same devices Use a X-over. all else use a
> straight thru.
>
> Viz: Two computers connected back to back X-over
> Two Routers connected back to back X-over
> Two HUBs " " " X-over
> Two Switches " " " X-over
>
> ALL Else use
> Straight Thru.
> Karl.
>
>
>
>
> <jakeczyz@yahoo.com> wrote:
>
> >Well said!! The only other thing I might add is
> that you can think of it in terms of DTE
> >and DCE. Whenever you connect two DCE together or
> two DTE together, you'll need to
> >crossover, otherwise use straight through. Since
> routers, firewalls, and, of course, PC's
> >are all considered DTE (data terminal equipment)
> while switches, hubs, and bridges are
> >considered DCE (data communications equipment) the
> rules make sense.
> >
> >Just my $.02 worth.
> >
> >HTH,
> >Jake
> >9102
> >
> >
> >--- Asim Khan <asimmegawatt@yahoo.com> wrote:
> >> Tom,
> >>
> >> The decision when to use Cross and when to use
> >> straight cable depends upon the interface type.
> By
> >> defualt all the interfaces are grouped in two
> classes;
> >> MDI (media dependent interface) and MDI-X (media
> >> dependent interface-Crossover i.e internally
> crossed).
> >> All the end devices have MDI interfaces like
> Routers,
> >> Computers, Firewalls etc. Whereas all the
> intermediate
> >> devices have MDI-X interfaces like Switches and
> Hubs.
> >> So when you connect two MDI interfaces you will
> have
> >> to use Cross cable. Similarly between MDI and
> MDI-X
> >> interfaces you have to use Straight and between
> two
> >> MDI-X interfaces you have to use Cross. So from
> above
> >> discussion we conclude
> >>
> >> Computer to Router ----> Cross Cable
> >> Router to Router ----> Cross Cable
> >> Computer to Computer -----> Cross Cable
> >> Computer to Switch/Hub---> Straight Cable
> >> Router to Switch/Hub ----> Stright Cable
> >> Switch to Switch -----> Cross Cable
> >>
> >> Remember on some Hubs we have uplink port which
> can be
> >> changed from MDI to MDI-X and vice versa through
> the
> >> toggle switch located near the uplink port.
> >>
> >> Hope this helps.
> >>
> >> Asim Khan
> >>
> >>
> >> --- Tom Young <gitsyoung@yahoo.co.jp> wrote:
> >> > Hi, group
> >> >
> >> > A very simple question ,may I use crossover
> cable
> >> > to
> >> > connect a computer to router's ethernet port
> >> > directly?Certainly I will set the port address
> and
> >> > computer's address in one subnet.
> >> >
> >> > Thanks
> >> >
> >> >
This archive was generated by hypermail 2.1.4 : Sat Sep 07 2002 - 19:36:47 GMT-3