BGP Anycast Real World Applications

If one location suffers outage (power failure, fire, etc.), anycast can automatically reroute traffic to a backup site without interruption.

Security providers (e.g. VPN, WAF, SIEM) can leverage anycast to provide highly available solutions, route incoming requests to the nearest instance, handle failover, scale with a single IP, and improve resilience.

BGP anycast supports both IPv4 and IPv6. Using anycast with IPv6 can further improve performance, reliability, and address scalability.

By using anycast to make their global DNS servers available from a single IP, providers can improve their end users’ internet browsing experience.

With BGP anycast, recursive lookup requests made by end users will be resolved by the authoritative DNS server closest to them.

In setups that combine public cloud, private cloud, and on-premises resources, an anycast layer can route requests agnostically to the optimal environment.

Overlay (virtual/private networking) providers can use anycast so remote users connect via a single IP to their closest entry point, and internal routing remains low-latency.

CDN providers can use anycast to route requests to the lowest-latency edge server, enabling faster content delivery and simpler scaling.

Anycast enables low latency by directing traffic to the nearest node and ensures high uptime by automatically rerouting around failures.

A platform can provide anycast networking capabilities (IP, routing, failover) as a service to other providers who need a robust anycast infrastructure.