Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I'm interested in how anycast works. There are two ways how a transmitter sends a packet to the receiver. I'm interested in how anycast with controlled access works. How a destination host is chosen. Guess there should be a control terminal which distributes the packets. But how exactly this happens?

share|improve this question

CloudFlare published a very informative blog post on how they're dealing with anycast. Only routing is involved. Each host is announcing a route via BGP and thus affecting the routing decision.

When a host goes down, the route is not announced so the router takes the next available route. Critical processes are also monitored and routes are announced or not depending on the server load.

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.