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Forwarding Ambiguity

Forwarding Ambiguity. M Vinod Kumar Dr. Abhay Karandikar. Example of Adjacent ISP Domain- 1. 1. 3. 4. 5. 2. 6. 7. Example of Adjacent ISP Domain- 2. 1. 3. 4. 5. 2. 6. Example of Adjacent ISP Domain- 3. 1. SPG3. 3. 4. 5. 2. SPG2. 6. SPG1.

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Forwarding Ambiguity

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  1. Forwarding Ambiguity M Vinod Kumar Dr. Abhay Karandikar

  2. Example of Adjacent ISP Domain- 1 1 3 4 5 2 6 7

  3. Example of Adjacent ISP Domain- 2 1 3 4 5 2 6

  4. Example of Adjacent ISP Domain- 3 1 SPG3 3 4 5 2 SPG2 6 SPG1 There are three Segment Protection Groups (SPGs): SPG1: Primary-IS 3-4 (violet color) and backup-IS 3-5-4 (pink color) SPG2: Primary-IS 4-5 (green color) and backup-IS 4-6-5 (gray color) SPG3: Primary-IS 6-4-5 (brown color) and backup-IS 6-5 (yellow color) SPG3 solves forwarding ambiguity problem when violet segment fails

  5. Questions?

  6. Thank You

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