1. 1 Forwarding Ambiguity M Vinod Kumar Dr. Abhay Karandikar

2. Example of Adjacent ISP Domain- 1 1 543 2 67

3. Example of Adjacent ISP Domain- 2 1 543 2 6

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

5. Questions?

6. THANK YOU