# Routed Topic Messages

A server forwards topic messages along routes only when the global property is defined for the topic.

Topic messages can traverse multiple hops.

When a route becomes disconnected (for example, because of network problems), the forwarding server stores topic messages. When the route reconnects, the server forwards the stored messages.

Servers connected by routes do exchange messages sent to temporary topics.

For more information, see `addprop topic` and `create topic`.

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