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IEEE 802.17

IEEE 802.17. The Resilient Packet Ring Protocol. John Lemon Chair IEEE 802.17. Agenda. RPR Basics Key Features Multi-PHY Ethernet Transport Ring RPR Frame Structure Current Work: Multiring Protection. RPR Basics. Created to standardize carrier-class packet ring transport

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IEEE 802.17

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  1. IEEE 802.17 The Resilient Packet Ring Protocol John Lemon Chair IEEE 802.17

  2. Agenda • RPR Basics • Key Features • Multi-PHY • Ethernet Transport Ring • RPR Frame Structure • Current Work: Multiring Protection jl_17_itu_geneva

  3. RPR Basics • Created to standardize carrier-class packet ring transport • Working Group active since 2000 • Base standard published in 2004 • 802.17a published in 2004 • 802.17b published in 2007 • 802.17c in progress • Resiliency • Sub-50 ms protection • Plug and play • Automatic discovery of capabilities and topology • Automatic configuration of capabilities • Scalable • From STM-1 through STM-64, 1 GE, 10 GE • Up to 255 stations per ring jl_17_itu_geneva

  4. Key Features • Automatic congestion management • Service classes vs. priority • Fair access to the ring • Topology and configuration discovery • Simple, automatic operation • Provides plug-and-play • Advanced protection scheme • Multiple methods from one scheme • Takes advantage of predetermined topology • Spatial Reuse • For routed and bridged networks jl_17_itu_geneva

  5. Multi-PHY • PHY (transport) agnostic • Uses Ethernet PHY, SONET PHY, or SDH PHY • Same behavior regardless of underlying physical layer • Additional PHYs easy jl_17_itu_geneva

  6. Ethernet Transport Ring • Ethernet frames travel through RPR ring unchanged jl_17_itu_geneva

  7. RPR Frame Structure • RPR header containing ring addressing information and RPR frame control • Original Ethernet frame (including FCS) jl_17_itu_geneva

  8. Current Work: Multiring Protection • Protected Inter-Ring Connection (PIRC) • Similar in concept to SONET/SDH DNI • P802.17c underway • Extends resilience of RPR from one ring to multiring networks jl_17_itu_geneva

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