BGP
Day 18 — BGP MED: Same-AS Comparison, Deterministic MED and `always-compare-med`
Learning objective Use MED to express a preferred entry point from one neighboring AS, explain Cisco's normal MED comparison scope, dis...
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Topic
Troubleshooting
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Showing posts with label Troubleshooting. Show all posts
Showing posts with label Troubleshooting. Show all posts
BestPath
Day 15 — Locally Originated BGP Paths: The Best-Path Step Hidden Behind Weight
Learning objective Explain the Cisco best-path preference for a locally originated path, distinguish that decision step from the commonly o...
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BGP
Day 12 — BGP NEXT_HOP: Reachability, iBGP Preservation and `next-hop-self`
Learning objective Predict common NEXT_HOP behavior across eBGP and iBGP, prove whether a received next hop is recursively reachable, and c...
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BGP
Day 5 — BGP Finite-State Machine: States, Transitions and Session Troubleshooting
Learning objective Use the BGP finite-state machine as a troubleshooting model: identify what a current state proves, what it does not prov...
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