Lessons
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- 01 Failing over faster than the timers
No lesson in this chapter matches that.
- What BGP convergence means at scale
- Timer tuning and fast-external-fallover
- Minimum advertisement interval
- Next-hop tracking as the primary convergence lever
- BFD for BGP, single-hop and multihop
- BGP PIC Core and PIC Edge
- Graceful Restart
- NSF awareness vs. NSF capability
- NSR and SSO
- Graceful shutdown and graceful maintenance
- Slow peer detection
- Route flap damping and why default parameters are wrong