Metropolitan Area Optical Alternatives

• 10 Gbps Ethernet and Resilient Packet Rings

  • The inherent bandwidth waste by BLSR
  • Early trials were conducted by running 10 Gbps Ethernet on OC-192 rings without SONET protection switching.
  • IEEE802.17 - Resilient Packet Rings Group, Internet protocol Over Packet Transport Rings
  • Cisco’s Dynamic Packet Transport - Layer 3 route restoration network
    • destination stripping
    • replace all SONET Automatic Protection Switching with Intelligent Protection Switching
    • Fairness algorithm (SRP-fa) is used to avoid congestion

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