At 11:04 AM 3/1/01, Tony van Ree wrote:
>Most modern day devices allow 10/100Meg half or full duplex this allows
>legacy systems to interoperate. Coax has be written out of the standards.
Are you sure? My copy of IEEE 802.3 is a few years old, but it still has
10Base5, 10Base2, 10Broad36 and even 1Base5. I don't think they remove
technologies; they just add to them.
Also, Gigabit Ethernet supports coax, believe it or not. For wiring room
applications you can connect two Gigabit Ethernet devices via a 25-meter
coax cable.
However, I understand the gist of your message. Most people would not
install a new Ethernet using coax.
Priscilla
>There are however heaps of devices that still only have 10Meg Half duplex
>ports. They must and can only be used at 10Meg Half Duplex end of story
>for them. The 2500 series routers are quite old (not compared to me but
>more than 3 years is common). The earlier ones were released prior to
>100BaseT being available.
>
>Just some thoughts
>
>Teunis,
>Hobart, Tasmania
>Asutralia
>
>
>On Thursday, March 01, 2001 at 03:58:18 AM, SAIF wrote:
>
> > well its not a terminology thing u see its understood when u use
> 100mbps its then not
> > csma/cd ethernet thing ,they made it like thre will be no collisions
> and speed will be
> > 10 times than 10 mbps
> > yes u r right on 36xx router there is full/half/auto duplex but u didnt
> get the idea
> > ,its basically technology which is sensing which media is supported to
> that interface
> > ,if it is 10mbps then interface will make it half duplex ethernet and
> iffff it is 100mbs
> > it will make it fast ethernet full duplex and u have choice to make it
> half/full duplex
> > by ur choice according to ur existing medium and toplogy
> > THAT PORT MUST BE NOT A FASTETHERNET PORT BUT IT CAN BE IF U USE IT IN
> 100MBPS WAY
> > THERE IS ANOTHER THING YES IT IS POSSIBLEEEE I AGREE U CAN WORK 10BASE
> T (ONLY NOT
> > COAXIAL) WITH FULL DUPLEX BUT THE THING IS THAT WHAT I WAS POINTING
> THAT CISCO PRODUCTS
> > USUALLY DONT SUPPORT FULL DUPLEX WITH 10MBPS
> > AM I WRONG ?????
> >
> > Neil Schneider wrote:
> >
> > > Sorry but you are incorrect. (unless we just have a terminology
> difference
> > > here) Just becuase you are running 100mbps. it is not automatically full
> > > duplex. the Fastethernet ports on routers (3640 seriesfor example)
> can be
> > > set to full/half/auto duplex. why bother with a half duplex setting
> if all
> > > fastethernet is full duplex?
> > >
> > > --
> > > Neil Schneider
> > > MCT MCSE CCSI CCNP
> > >
> > > "SAIF" <[EMAIL PROTECTED]> wrote in message
> > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> > > > 100mbps is not ethernet be sure its fast ethernet ,also their is no
> > > collisions in fast
> > > > ethernet ,its colliision free and this is only possible if u have
> one way
> > > to send and
> > > > one way to recieve data simultaneously :) i am sure u got the idea
> > > > secondly in ethernet there are collisions and if there are colliisions
> > > Can u use one to
> > > > send and one way to recieve simultaneously with collisions so if u cant
> > > the result is
> > > > ethernet works in half duplex mode and fast ethernnet works in full
> duplex
> > > > if u have any thing different than me plz share with us
> > > > waiting ur reply
> > > > Saif
> > > >
> > > > Neil Schneider wrote:
> > > >
> > > > > It is NOT true that ethernet is half and fastethernet is full duplex.
> > > > > Either 10Mbps or 100Mbps ehternet can be run in half or full duplex
> > > mode.
> > > > > And offhand I don't know if the 2500 AUI port will do full ethernet.
> > > > >
> > > > > --
> > > > > Neil Schneider
> > > > > MCT MCSE CCSI CCNP
> > > > >
> > > > > "SAIF" <[EMAIL PROTECTED]> wrote in message
> > > > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> > > > > > NO ITS ETHERNET PORT AND WORKING HALF DUPLEX ONLY ,U SEE CISCO
> GIVES
> > > > > FASTETHERNET PORTS
> > > > > > SPECIALLY IN THEIR ROUTERS SPECIALLY IN 4XXX SERIES AND U KNOW
> > > ETHERNET
> > > > > WORKS IN HALF
> > > > > > DUPLEX AND FASTETHERNET WORKS IN FULL DUPLEX SO THE RESULT IS AUI
> > > PORT IS
> > > > > HALF DUPLEX
> > > > > > ETHERNET NOT AUTO SENSE AND IF U WANT AUTOSENSE 10/100 BASE
> T GO TO
> > > ANY
> > > > > OTHER ROUTER
> > > > > > ,CHECK THE ROUTER;S MANUAL :)
> > > > > > HOPT IT WILL HELP
> > > > > > IS IT ?
> > > > > >
> > > > > > Turfis wrote:
> > > > > >
> > > > > > > Is the Ethernet AUI port on the 2500 series Cisco routers Full
> > > Duplex
> > > > > > > compatible? Does it autonegoiate? Can you hard code the
> interface
> > > for
> > > > > > > half/full/auto? Thanks!
> > > > > > >
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