Anycast Resources

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Anycast is a design in which a single destination IP address is shared by devices in multiple locations. It can be used to implement large-scale UDP services (example: DNS) or to build multi-site high-availability solutions without DNS-based load balancing.

Anycast is also commonly used in data center fabrics to implement redundant first-hop gateways, and with overlay virtual networks (example: VXLAN) to build scale-out gateway clusters or MLAG clusters.

What Is Anycast?

Want to use anycast in a public cloud? Become a Cloudflare user ;) or use AWS Global Accelerator (described in Amazon Web Services Networking webinar).

Anycast in Data Center Fabrics

For more information watch:

Network Designs Using Anycast

Anycast Use Cases

Anycast Multipathing

Testing IP Anycast in a Virtual Lab

Further Reading