Segment Routing TI-LFA

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  • เผยแพร่เมื่อ 24 ธ.ค. 2024

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  • @mohammedalinashnoush2336
    @mohammedalinashnoush2336 หลายเดือนก่อน

    Excellent, thanks

    • @BarbaraAnne
      @BarbaraAnne  หลายเดือนก่อน

      Glad you liked it!

  • @josemanuelpinalesfiguereo6859
    @josemanuelpinalesfiguereo6859 ปีที่แล้ว +1

    Excellent and very detailed explanation. I was struggling getting the P and Q knows. Now I have a better understanding. Also, a great point was how to the P4 router calculates what label to push, whether the prefix sid or a adj sid label.

  • @tolgayucel1442
    @tolgayucel1442 9 หลายเดือนก่อน

    It's surprising for me to learn your channel. Excellent video. Appreciate it

    • @BarbaraAnne
      @BarbaraAnne  6 หลายเดือนก่อน

      So nice of you!

  • @algabsi6323
    @algabsi6323 11 หลายเดือนก่อน

    Thank you, Barbara. Great Video!

    • @BarbaraAnne
      @BarbaraAnne  11 หลายเดือนก่อน

      Thank you!

  • @ashrafzakaria1267
    @ashrafzakaria1267 2 ปีที่แล้ว

    Very Good Explanation, Thanks Barbara

  • @matthewjohnson9184
    @matthewjohnson9184 11 หลายเดือนก่อน

    Hi Barbara, Can you explain why P5 is considered in the Q-space as it is not on the post computed shortest path.

    • @BarbaraAnne
      @BarbaraAnne  11 หลายเดือนก่อน

      Hi Matthew - In this example, P5 is in the Q-space because it's shortest path from P5 to P9 never traverses the potential broken link between P4 and P5.
      For the post computed shortest path, it is looking for a node that is in the P space and the Q space. P5 doesn't fit into that category and so it's not on the post computed path.

  • @networkstuff5152
    @networkstuff5152 2 ปีที่แล้ว

    Great video, congratulations for your very clear explanation

    • @BarbaraAnne
      @BarbaraAnne  2 ปีที่แล้ว

      Thanks! Glad you liked it.

  • @babamohamed452
    @babamohamed452 ปีที่แล้ว +1

    Hi @Barbara,
    Thanks for your explanation. I have one question please, why PE2, PE3 are not selected in the Q space knowing that they can reach Dest without passing through the protected link?

    • @BarbaraAnne
      @BarbaraAnne  ปีที่แล้ว +1

      Hi Mohamed. Their link metrics are 5000 so they are not on a shortest path. The green links have a metric of 1 and the orange have a metric of 5000.

    • @babamohamed452
      @babamohamed452 ปีที่แล้ว

      @@BarbaraAnne Thanks dear for your reply. But I still think that PE2 can be in Q space :)
      Please check my below understanding of the topology:
      - PE3 can reach P9 through (P5--P6--P9) --> PE3 is not in Q space as it passes through P5 (I was wrong in my 1st comment ;)
      - PE2 can reach P9 through (P6--P9) --> PE2 can be in Q sapce as it is not passing through the protected link P4-P5.
      Please correct me if I'm wrong
      Thanks

    • @BarbaraAnne
      @BarbaraAnne  ปีที่แล้ว

      @@babamohamed452 TI-LFA is trying to find the shortest path so that when the IGP reconverges, it doesn't have to change the Service Path. PE2->P6->P9 has a path cost of 5000+1=5001 whereas P2->P3->P6->P9 has a cost of 1+1+1=3 so that's the route the converged IGP will take. It's possible to take that route but it is not the BEST route because of the link metrics. TI-LFA is trying to find the best route.

  • @eng.bensonkalokin.6463
    @eng.bensonkalokin.6463 2 ปีที่แล้ว

    Exactly the explanation I needed! Great 👍

    • @BarbaraAnne
      @BarbaraAnne  2 ปีที่แล้ว

      Glad it was helpful!