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Day 73 — EVPN Fundamentals and Route Types 1–5

November 12, 2026

1. Opening EVPN is not one route type with several display formats. It is a family of BGP NLRI that represents different service objects. A...

November 11, 2026

1. Opening BGP can advertise not only that a prefix is reachable, but also that a router has bound an MPLS label to that prefix. This is th...

November 10, 2026

1. Opening A route reflector carrying thousands of VPNs does not need to send every VPN route to every PE. Route Target Constraint adds a c...

November 08, 2026

1. Opening PE-CE BGP is where customer routing policy meets provider VPN policy. A route can be perfectly valid on the CE-PE session and st...

November 07, 2026

1. Opening An MPLS L3VPN must solve two different problems: overlapping customer addresses need to become unique inside the provider contro...