CCIE R&S V5.1 Written Exam: Describe BGP Fast Convergence Features
I will be discussing Describe BGP Fast Convergence Features as part of Layer 3 Technologies and Fundamental Routing Concepts CCIE Routing and Switching (R&S) V5.1 exam blueprint topics.
Describe BGP Fast Convergence Features :
3.7.i Describe BGP fast convergence features
3.7.i [i] Prefix independent convergence (PIC)
3.7.i [ii] Add-path
3.7.i [iii] Next-hop address tracking
Let me summarize some of the key takeaways related to CCIE R&S V5.1 Written Exam: Implement and Troubleshoot Static Routing as relevant to CCIE Routing and Switching (R&S) V5.1 written exam blueprint topics.
- The BGP Additional Paths feature provides a way for multiple paths for the same prefix to be advertised without the new paths implicitly replacing the previous paths. Thus, path diversity is achieved instead of path hiding
- The BGP Prefix Independent Convergence (PIC) improves convergence after a network failure. This convergence is applicable to both core and edge failures on IP and MPLS networks
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