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Fiber Acquisition and Implementation

Learn about the collaborative effort of Merit, leasing fiber to connect institutions in Michigan and Chicago, using DWDM transport technology. Explore the setup, upgrades, and challenges faced in this fiber implementation project.

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Fiber Acquisition and Implementation

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  1. Fiber Acquisition and Implementation Internet2 – Joint Techs July 17, 2006

  2. Setting the Stage • The three founding institutions of Merit collaborated on leasing over 750 miles of fiber to connect their institutions in Michigan and Chicago. • DWDM transport system was selected and engineered to support up to thirty 10 GbE wavelengths on day one. • Installation spring/summer 2005. • Operational Aug. 2005

  3. Setting the Stage • Six OADM sites • One located at each of the three university campuses • Two additional Michigan PoPs • 710 N. Lake Shore Dr. • System is known as Michigan Lambda Rail (MiLR)

  4. Setting the Stage • Merit was provided 10 GbE waves between each OADM site. • To upgrade Michigan-wide core • Remove carrier leased circuits • Reach member campuses in southern lower Michigan

  5. Moving to Facilities-based Networking • Purchased fiber rings in the Detroit, Lansing, Grand Rapids, and Chicago areas. • Plans were drawn up to create fiber loops throughout southern and mid-Michigan. • Cross border paths to neighboring networks are being pursued.

  6. Lighting the way • Passive WDM equipment combined with pluggable optics (CWDM and standard telco wavelengths) for switches/routers provide a good first approach, with growth. • A single wave’s capacity is shared by most sites around a metro ring. • Additional wavelengths can be dedicated to larger institutions, backbone transit traffic, or SLAs (voip?). • Anticipating inserting 10GbE where signal loss permits.

  7. Reality bites • Buying existing fiber runs unavoidable. • Often have to live with single (folded) access loop to sites where multiple, diverse laterals are too costly. • Ring loss (and with some limited impact, total diameter) for expressed waves accumulates with each new access lateral. • The signal level values are often available in the optics but not implemented in many of the switches and routers.

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