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 -- Tomas Daniska systems engineer Tronet Computer Networks Plynarenska 5, 829 75 Bratislava, Slovakia tel: +421 2 58224111, fax: +421 2 58224199 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] Sent: 12. júna 2002 17:48 To: nanog@merit.edu Subject: Re: GigEth regenerators
On Wed, 12 Jun 2002, Daniska Tomas wrote:
but for gigeth in this case - we need to connect two sites about 200km apart over dark fiber
Check out the 7020 from Transmode <http://www.transmode.se/products/sing_dual.htm>
Btw, my personal best so far is 150km over dark fiber using a extra long haul GBIC, 32dB loss over the fiber and it worked perfectly. Only tested it for 10 minutes, but there were no CRC errors during that time.
+4dB output from the GGBIC, now we have to worry to not look into the laser :)
-- Mikael Abrahamsson email: swmike@swm.pp.se
tomas@tronet.com ("Daniska Tomas") writes:
a brief summary of responses up to now:
in response to my earlier reply on this topic, i was also pointed at http://www.nbase-xyplex.com/products.html which indeed shows how to do 65Km regen points. pretty cool other stuff too.
On Thu, 13 Jun 2002, Daniska Tomas wrote:
mikael: which exact gbic did you use?
The Finisar FTR1619-55. My experiense is that buying directly from the manufacturer is taking a chance, it's much cheaper, but you get great variance in quality and you should really do testing on the gbics, or be prepared to swap gbics in case you get problems. Buying from the switch vendor ensures that you do not get finger-pointing and they do test the gbics more than the manufacturer. -- Mikael Abrahamsson email: swmike@swm.pp.se
participants (3)
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Daniska Tomas -
Mikael Abrahamsson -
Paul Vixie