The Case Against IPoDWDM
Elby was saying this during a panel on bandwidth strategies at the The Optical Society (OSA) Executive Forum this morning.
"We don't see that as actually lowering the cost," because router ports are inherently expensive due in part to the amount of processing sitting behind them, he said.
Comcast Corp. (Nasdaq: CMCSA, CMCSK) is a fan of IP-over-DWDM, though, partly because it can help lower optics costs more quickly. In a later presentation on the same panel, Vik Saxena, Comcast senior director of network architecture, noted that a pair of client-side optics for a 100-Gbit/s connection costs more than three times what the 40-Gbit/s optics cost. "There is a lot of inefficiency in the traditional approaches of doing [separate] line-side/client-side things," he said.
— Craig Matsumoto, West Coast Editor, Light Reading