▶ Interactive Lab

Anycast Routing — Same IP, Many Places

Click a user location; see which anycast PoP receives the traffic.

Advertisement
click on the map to add a user
Same IP advertised from multiple PoPs. BGP routes user packets to the nearest one.

What you're seeing

Anycast advertises one IP from multiple PoPs (Points of Presence). BGP picks the route with the shortest AS-path; user traffic lands at the topologically closest PoP.

If a PoP goes down, BGP withdraws its route; users automatically failover to the next-closest PoP. This is how Cloudflare, 1.1.1.1, and most modern CDNs handle resilience without complex DNS games.

★ KEY TAKEAWAY
Anycast: same IP advertised from many PoPs. BGP routes each user to the topologically nearest. Auto-failover when a PoP dies.
▶ WHAT TO TRY
  • Click anywhere on the map to add a user.
  • Click Kill nearest PoP — watch users re-route automatically.
  • This is how Cloudflare, 1.1.1.1, and most modern CDNs work.