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By 2003, 18 more Cisco buildings on the San Jose campus were using so much capacity that customer-provided access would be more economical, but Cisco could not add these buildings to the legacy infrastructure of unconnected SONET rings. The legacy infrastructure had other drawbacks as well, including high management burden, inefficient capacity planning, and large footprint and power requirements. Cisco decided to migrate from its legacy SONET TDM local-access infrastructure to a unified, campuswide solution powered by the Cisco ONS 15454 Multiservice Provisioning Platform. While other Cisco locations had a local access infrastructures based on the Cisco ONS 15454 system, this would be the first that was not a greenfield deployment. Cisco IT planned the cutover carefully to ensure that critical business services remained available.

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Format:PDF
Date:Dec 2007

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