Gfp t usage in fc bb 2
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GFP-T usage in FC-BB-2 PowerPoint PPT Presentation


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GFP-T usage in FC-BB-2. Confidential – Property of Akara Corporation. GFP Basics. TDM Pipe with 20+ MB/Sec capacity Transport of all transmission words 64B/65B encoding to encapsulate K-characters Clumped in 67B Superblocks (incl CRC-16) Lightweight header over group of Superblocks

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GFP-T usage in FC-BB-2

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Gfp t usage in fc bb 2

GFP-T usage in FC-BB-2

Confidential – Property of Akara Corporation


Gfp basics

GFP Basics

  • TDM Pipe with 20+ MB/Sec capacity

  • Transport of all transmission words

    • 64B/65B encoding to encapsulate K-characters

    • Clumped in 67B Superblocks (incl CRC-16)

    • Lightweight header over group of Superblocks

    • Scrambling of payloads

      • XOR with special constant on Core Header

      • X^43 scrambling on remainder

    • NOT FC frame-based

      • Exception for idle insertion/removal

  • Client Management frames


Gfp t usage in fc bb 2

FC-BB-2 Implementation

  • BB Flow control flows through

    • Managed by connected switches

  • No B_Port

  • Message passing to convey link events

    • LOL, LOS via Client Management Frames

  • Not Operational port state if GFP/SONET failure

    • Messages to inform of reverse-direction or mid-path failures


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