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Is there a hierarchy or dependency between the different anycast instances of a letter?

April 26, 2017Anycast dependency different hierarchy INSTANCES letter

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Is there a hierarchy or dependency between the different anycast instances of a letter?

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No there is not. If one of them fails the others will continue to operate. The remaining instances will provide service to the clients of the failed instance whenever Internet routing has changed accordingly. Until this happens these clients will be served by other letters.