Lessons
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- 01 Why the next hop decides everything
No lesson in this chapter matches that.
- Default next-hop: eBGP rewrites, iBGP preserves
- Why iBGP prefixes are unusable without IGP reachability to the next hop
- next-hop-self and what it does not cover
- Recursive next-hop resolution
- Recursion through a default route and the resulting blackhole
- Third-party next-hop on multi-access segments
- next-hop-unchanged
- Next-hop address tracking
- Scan-based vs. event-driven next-hop processing
- Diagnosing a prefix that is valid but not best