BGP Graceful Restart (GR) is one of those features you turn on everywhere because the vendor datasheet says it improves availability — and then you spend the next year debugging weird convergence behavior because of it. Let me break down what GR actually does, and more importantly, when it helps versus when it makes …

OSPF link-state advertisements are the currency of the protocol. Understanding which LSA type carries what information — and who generates it — is essential for troubleshooting convergence issues. Quick Reference Type Name Originated By Scope 1 Router LSA Every router Single area 2 Network LSA DR on broadcast segment …