Here is the ITU 100 GHZ grid. http://www.telecomengineering.com/downloads/DWDM%20ITU%20Table%20-%20100 %20GHz.pdf
ITU 52 is 35.82. Whether or not it will work at .92 is moot, IMO. I would tell your vendor to give you optics that follow the ITU grid. .92 doesn't show up anywhere in the ITU grid, even at 50 Ghz. The spectral width on the optics is .2nm, but I wouldn't want to be sitting on the edge of the acceptable limit. Mike -- Michael K. Smith - CISSP, GSEC, GISP Chief Technical Officer - Adhost Internet LLC mksm...@adhost.com w: +1 (206) 404-9500 f: +1 (206) 404-9050 PGP: B49A DDF5 8611 27F3 08B9 84BB E61E 38C0 (Key ID: 0x9A96777D) > -----Original Message----- > From: cisco-nsp-boun...@puck.nether.net [mailto:cisco-nsp- > boun...@puck.nether.net] On Behalf Of Steven Raymond > Sent: Wednesday, October 27, 2010 11:20 AM > To: Cisco Network Service Providers > Subject: [c-nsp] Are these DWDM optics compatible? > > Ordered part number DWDM-X2-35.82 , and received part labeled DWDM- > X2-35.92 (non-Cisco branded X2 optics). Vendor says oh they are close > enough to work, there's a .2nm working range for ITU channel 52 signaling. > In fact they claim that DWDM-X2-35.82 is the very same part, just with a > different (or in this case typoed) label on it. Does anyone have experience to > confirm or reject the vendor's claim? > > Looking here: > http://www.cisco.com/en/US/prod/collateral/modules/ps5455/ps6576/data > _sheet_c78_489725.html > I can almost buy their argument, and google perhaps confirms by returning > "No results found for "DWDM-X2-35.92"." Makes me wonder if all these > parts are simply the same hardware, and upon ordering they simply tune the > frequency into an eprom for whatever was ordered, apply a label and ship it > out? > > Thanks! > > > > _______________________________________________ > cisco-nsp mailing list cisco-nsp@puck.nether.net > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/