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Anycast the easy way

Blog post from Fly.io

Post Details
Company
Date Published
Author
Kurt Mackey
Word Count
812
Company Posts That Month
3
Language
English
Hacker News Points
-
Post removed?
No
Summary

The article discusses the process of setting up an Anycast network, which involves announcing a single IP block from multiple locations to connect users to the nearest server. To do this, one needs to acquire IPs and then "announce" them using Border Gateway Protocol (BGP). The author suggests registering with a Regional Internet Registry (RIR) such as RIPE NCC or ARIN, which charge an annual membership fee. Acquiring IPv4 addresses can be challenging due to limited availability, so one might need to buy or lease them from a broker. It's also important to ensure the purchased IPs are not on abuse lists and are compatible with your RIR. To announce your own blocks, you need at least an IPv4 /24 or an IPv6 /48. The article also mentions obtaining an Autonomous System number (ASN) for grouping IPs together, which is free from RIPE and relatively easy to set up.

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