Yahoo! BB in Japan goes 40G

By Phil Hochmuth, NetworkWorld.com, 05/15/06

Cisco says Japanese service provider Yahoo! BB is using the 40Gbps OC-768 module for the CRS-1 router in its broadband delivery network.

Yahoo! BB provides Internet access, VoIP, video-on-demand and other advanced services to 5 million ADSL subscribers in Tokyo. With millions of subscribers entering the network at multi-megabit-per-second speeds, the provider decided to install 40G SONET to aggregate and trunk together all of its links at the edge.
Introduced in 2004, the CRS-1 is Cisco’s highest-scaling carrier router, with 1.2Tbps of capacity and 40Gbps of capacity per line card slot. The routers can also be clustered for even higher scale. Up to 72 CRS-1 chassis can be linked together to form a single virtual 92Tbps router fabric, Cisco says. Special optical interconnects are used in this clustering configuration.

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