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Implementing a National Co-Managed MPLS Network

This document discusses the implementation of a National MPLS Network for NOAA in France in 2008, highlighting benefits, lessons learned, and future considerations. It covers network architecture, management, and the transition from legacy networks to MPLS.

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Implementing a National Co-Managed MPLS Network

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  1. Implementing a National Co-Managed MPLS Network WMO CBS ET-CTS Toulouse, France 26-30 May 2008 Allan Darling, NOAA’s National Weather Service

  2. Background • Backup RTH Washington site let to the need to replace customer point-to-point circuits • An MPLS network provided by Sprint with virtual IP addresses used for all external services was the chose solution • NWSTG MPLS network architecture was chosen as the replacement for NWS national point-to-point circuits (NWSnet) • NWSnet MPLS network architecture was chosen as the replacement for NOAA national point-to-point circuits (NOAAnet) • Over 70 sites migrated thus far • Will replace over a dozen legacy NOAA networks • Network to be utilized by all NOAA organizations WMO CBS - ET-CTS Toulouse, FR

  3. Benefits • Improved overall routing performance • Replaces traditional hub-and-spoke architecture with any-to-any architecture • Addresses network single points of failure • Carrier MPLS network reroutes around internal failures • Highly scalable / agile • Reduces time to establish new pathways between existing points on network • No additional cost to establish and utilize new pathway • Indirect cost: utilization of access point bandwidth WMO CBS - ET-CTS Toulouse, FR

  4. Benefits • Consolidation leads to reduced management overhead • Centralized management, monitoring • Self managed • Carrier managed • Co-managed (not typical but currently the model for NOAAnet) WMO CBS - ET-CTS Toulouse, FR

  5. Lessons • Acquisition schedule must be balanced against implementation schedule • Buy access circuits too early – pay for unused resource • Buy access circuits too late – implementation delayed awaiting resource • Planning IP address management is particularly important when migrating existing networks so as to minimize disruption during migration WMO CBS - ET-CTS Toulouse, FR

  6. Lessons • Important to understand Internet connectivity of networks to be replaced to avoid asymmetric routes when MPLS is implemented • Legacy network security implemented via static routing (application specific routing) must be considered and re-implemented prior to migration to MPLS WMO CBS - ET-CTS Toulouse, FR

  7. Lessons • Carrier management policies may not address organization’s operational needs • NOAA is currently co-managing with Sprint to give us additional oversight and to maintain migration schedule • NOAA will take over management after migration is complete • Decision drivers • Carrier planned maintenance outages cannot be scheduled for RTH operational windows • Carrier responsiveness for addressing operational center needs, particularly outside of the continental U.S. • Carrier not driven to meet NWS internal migration schedule WMO CBS - ET-CTS Toulouse, FR

  8. Backup Center Connectivity WMO CBS - ET-CTS Toulouse, FR

  9. Lessons WMO CBS - ET-CTS Toulouse, FR

  10. Lessons WMO CBS - ET-CTS Toulouse, FR

  11. Lessons WMO CBS - ET-CTS Toulouse, FR

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