Will, I think you also need to consider the case where one operator runs more than one network. This can happen because of acquisition or administrative structure. I regret it might also happen because of vendor equipment compatibility/lock-in issues.
Cheers, Adrian > -----Original Message----- > From: Will Orton [mailto:w...@loopfree.net] > Sent: 24 October 2012 00:07 > To: nanog@nanog.org > Subject: Inter-domain OTN, does it happen in the real world? > > Reading about OTN networks, I see that "IrDI" is specified to handle the case > where one OTN network needs to connect to another natively with OTN signals. > > Is this done in the real world? Does OTN network operator A ever go to OTN > network operator B and say, "I'd like to buy a OTU2 from city X to city Y on your > long haul network (at buildings J and K where we can connect simply with > short-distance SMF/1310 signals), and what TCM levels can you give me?" > > I understand this in the case of lit 10GbE-WANPHY, LAN, and OC-192, but are OTU > "lit" signals bought and sold wholesale this way too? Is there generally a price > premium over the more normal client signals? > > -Will Orton