Shulou(Shulou.com)06/01 Report--

Unicast is one-to-one; arbitrary wave is one-to-nearest; multicast is one-to-many

An anycast address represents a service, which may be multiple devices.

The advantage of using anycast addresses is that the router always chooses the admission to the nearest or least costly server, and when one of the servers becomes unavailable, the router can point the router to the next nearest router.

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