[48713] in North American Network Operators' Group
RE: GigEth regenerators
daemon@ATHENA.MIT.EDU (Daniska Tomas)
Thu Jun 13 08:32:04 2002
Date: Thu, 13 Jun 2002 14:30:06 +0200
From: "Daniska Tomas" <tomas@tronet.com>
To: <nanog@merit.edu>
Errors-To: owner-nanog-outgoing@merit.edu
a brief summary of responses up to now:
- there are several vendors making some kind of sx-to-zx gbe converters =
(they call it gbe extenders), which gives an equivalent of a device with =
a zx gbic. these vendors include jdsu, luxn, extreme etc.
- two companies were found making gbe optical regenerators - imcnetworks =
and transmode
- other solution is to try with edfa
mikael: which exact gbic did you use?
i was comparing cisco-reselled gbics and their cwdm gbics seem to be =
more than 10dB better on power budget... anybody tried this in real =
life?
thanks again
--
=20
Tomas Daniska
systems engineer
Tronet Computer Networks
Plynarenska 5, 829 75 Bratislava, Slovakia
tel: +421 2 58224111, fax: +421 2 58224199
=20
A transistor protected by a fast-acting fuse will protect the fuse by =
blowing first.
> -----Original Message-----
> From: Mikael Abrahamsson [mailto:swmike@swm.pp.se]=20
> Sent: 12. j=FAna 2002 17:48
> To: nanog@merit.edu
> Subject: Re: GigEth regenerators
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> On Wed, 12 Jun 2002, Daniska Tomas wrote:
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> > but for gigeth in this case - we need to connect two sites=20
> about 200km
> > apart over dark fiber
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> Check out the 7020 from Transmode=20
> <http://www.transmode.se/products/sing_dual.htm>
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> Btw, my personal best so far is 150km over dark fiber using a=20
> extra long=20
> haul GBIC, 32dB loss over the fiber and it worked perfectly.=20
> Only tested=20
> it for 10 minutes, but there were no CRC errors during that time.
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> +4dB output from the GGBIC, now we have to worry to not look into the=20
> laser :)
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> --=20
> Mikael Abrahamsson email: swmike@swm.pp.se
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