At 11:06 AM 3/22/01, Neil Schneider wrote:
>Priscilla,
>
>I usually look forward to your posts, but I think you are way off base with
>this response. Pointing to the cisco page describing different technologies
>does absolutely nothing to answer my original question.
I'm sorry I was snide, but I was serious. That document describes
internetworking, not just technologies. Internetworking is what you need to
do what you are talking about. You need a bridge or a router.
>I also relize that
>a converter/transiever such as this would have limited use in a real world
>situation, but that certainly does not mean it doesnt exist.
>Obvoiusly we can move data between ethernet and serial, that is what is
>being done in the router itself, so your train/bus senario is meaningless.
A device that would convert between a train station and a bus station would
be analogous to a router or a bridge in the internetworking world.
Think about a train station. A train station is where trains arrive. Trains
are different than buses. They run on different tracks than buses. They go
at different speeds than buses. They hold cargo differently. They have
different headers and footers (caboose, engine). That is analogous to the
differences between serial and Ethernet. Serial and Ethernet use different
physical layer bit representations. They use different frames. They use
different clocking and run at different speeds. They user different
physical interfaces. They have different error correction methods. There
are many more differences that I won't get into because I'm in a bit of a rush.
I still suggest reading that document! Seriously.
Priscilla
>What I was looking for was an external device that can do this without
>resorting to using another router such as -->>
>
>ethernet -->routerA rj45 ----routerA serial --->routerB serial ----routerB
>rj45--->ethernet
>
>I want to do:
>
>ehternet ---> external converter ---->routerA serial---routerA
>rj45 --->ethernet
>
>Neil Schneider
>
>
>
>
>Priscilla Oppenheimer <[EMAIL PROTECTED]> wrote in message
>[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> > The question doesn't even make sense. It would be like asking "what could
>I
> > use to convert a train station to a bus station?"
> >
> > Read the document.
> >
> > http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/index.htm
> >
> > Priscilla
> >
> > At 10:19 AM 3/22/01, you wrote:
> > >whoever comes up with the converter will be rich...
> > >
> > >-----Original Message-----
> > >From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
> > >Priscilla Oppenheimer
> > >Sent: Thursday, March 22, 2001 9:29 AM
> > >To: [EMAIL PROTECTED]
> > >Subject: RE: RJ45 ethernet to cisco Serial conversion?
> > >
> > >
> > >At 12:27 AM 3/22/01, Lim Jit Cheng wrote:
> > > >it's not all gone...... there is such converter....
> > > >
> > > >http://www.lanode.com/tier2/et10.htm
> > >
> > >That's not a converter. It's a bridge.
> > >
> > >Here's a good document to help you and the person who asked the original
> > >question:
> > >
> > >http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/index.htm
> > >
> > >Priscilla
> > >
> > >
> > >
> > >
> > > >i wonder how much is the price.. i am interested too.....
> > > >
> > > >
> > > >-----Original Message-----
> > > >From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
> > > >John Neiberger
> > > >Sent: Wednesday, March 21, 2001 11:51 PM
> > > >To: [EMAIL PROTECTED]
> > > >Cc: [EMAIL PROTECTED]
> > > >Subject: Re: RJ45 ethernet to cisco Serial conversion?
> > > >
> > > >
> > > >There is no way to connect an ethernet interface to a serial interface,
> > > >they are entirely different technologies. Your only option would be to
> > > >add another router to do the media conversion.
> > > >
> > > >Or, you could buy a hub/switch and use that to connect the dsl router,
> > > >the lan, and your 2501. However, that's not the greatest solution and
> > > >it doesn't really accomplish your goal.
> > > >
> > > >HTH,
> > > >John
> > > >
> > > > >>> "Neil Schneider" <[EMAIL PROTECTED]> 3/21/01 8:28:06
> > > >AM >>>
> > > >I want to be able to plug my DSL modem into the serial port on my
> > > >2501,
> > > >leaving the ethernet port available for my lan. Does anyone know of a
> > > >converter/transiever that will allow me to do this?
> > > >Thanks in advance.
> > > >
> > > >Neil
> > > >
> > > >
________________________
Priscilla Oppenheimer
http://www.priscilla.com
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