Routing Mastery — OSPF, BGP and Advanced EOS Routing

This comprehensive three-month routing course develops deep, applied proficiency in the routing protocols most critical for senior Arista engineers — OSPF, BGP, and the advanced EOS routing features that separate truly experienced network engineers from those with only surface-level protocol knowledge. Routing is the foundational discipline of advanced networking, and the three-month timeframe of this course allows for a level of depth and hands-on practice that shorter formats simply cannot provide. The course opens with a thorough review of IP routing fundamentals as implemented in EOS — the routing table, administrative distance, recursive next-hop resolution, and the mechanics of how EOS populates and maintains the RIB and FIB. OSPF is then covered comprehensively, beginning with link-state fundamentals and the SPF algorithm before moving into advanced topics including multi-area design, LSA types, stub and totally stubby areas, route summarization, and the design principles for large-scale OSPF deployments. BGP is addressed with the depth it deserves as the most powerful and widely deployed routing protocol — covering eBGP and iBGP fundamentals, the full BGP decision process, advanced attribute manipulation for traffic engineering, route reflector design, BGP communities, and BGP EVPN for data center use cases.