OEO for fast ethernet applications

Archived from groups: comp.dcom.lans.ethernet (More info?)

On 11 May 2004 06:56:36 -0700, tease12p@yahoo.co.in (tease12p) wrote:

>Hi All
>
>I have a question.
>can we use SONET/SDH OEOs of STM-1 short haul/intermediate distance
>range in 100mbps fast ethernet applications?
>
>i have a 4 port fast ethernet switch that connects to multimode fiber.
>I need a distance range of 2-15 km. my question is: can i use a stm-1
>range oeo???
>thanks in advance
>T
>(some vendors claim that their product is suited for SDH/ATM/and
>ethernet applications. i am not very sure if it is possible....please
>guide me)

OEO devices tend to be protocol and bit-rate dependant. An SDH OEO
device won't be able to regenerate native Ethernet signals.

-Terry

Archived from groups: comp.dcom.lans.ethernet (More info?)

On Tue, 11 May 2004 18:22:14 -0400, Terry Baranski
<tbaranski@mail.REM0VE.com> wrote:

>OEO devices tend to be protocol and bit-rate dependant. An SDH OEO
>device won't be able to regenerate native Ethernet signals.

I should re-word this: unless the vendor specifically says that native
Ethernet is supported along with SDH, it almost certainly isn't.
"Ethernet/ATM applications" sounds like marketing speak for Packet/ATM
over SDH.

-Terry

Archived from groups: comp.dcom.lans.ethernet (More info?)

Hi terry
Thanks for the reply.
the idea is to convert optical to electrical stream....and assuming
the ethernet phy device does the electrical signal generation for
ethernet...would it still cause a problem?

and the datasheet says the following

Application
ATM 155Mbps SONET/OC-3 SDH/STM-1 interconnections
FDDI
Fast Ethernet
Point to Point Link

thanks in advance
T
Terry Baranski <tbaranski@mail.REM0VE.com> wrote in message news:<vjk2a0tekoqlqcatlj89i25q4pc9bqkcd2@4ax.com>...
> On Tue, 11 May 2004 18:22:14 -0400, Terry Baranski
> <tbaranski@mail.REM0VE.com> wrote:
>
> >OEO devices tend to be protocol and bit-rate dependant. An SDH OEO
> >device won't be able to regenerate native Ethernet signals.
>
> I should re-word this: unless the vendor specifically says that native
> Ethernet is supported along with SDH, it almost certainly isn't.
> "Ethernet/ATM applications" sounds like marketing speak for Packet/ATM
> over SDH.
>
> -Terry

Archived from groups: comp.dcom.lans.ethernet (More info?)

On 12 May 2004 07:26:03 -0700, tease12p@yahoo.co.in (tease12p) wrote:

>Hi terry
>Thanks for the reply.
>the idea is to convert optical to electrical stream....and assuming
>the ethernet phy device does the electrical signal generation for
>ethernet...would it still cause a problem?
>
>and the datasheet says the following
>
> Application
> ATM 155Mbps SONET/OC-3 SDH/STM-1 interconnections
> FDDI
> Fast Ethernet
> Point to Point Link

The specs are pretty vague -- I think you'll have to ask the vendor to
be sure that it supports native Fast Ethernet.

-Terry