One way to improve WAN performance is to use bandwidth on demand, which is a feature of a WAN router that enables the router to send a response to the server to maintain the connection, thus reducing traffic from all connected clients.

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Bandwidth on demand refers to the ability to adjust the amount of bandwidth allocated based on current network traffic demands, not to maintaining connections or reducing traffic from connected clients. It's about efficiently managing bandwidth resources, not about how routers respond to servers.

One Way to Improve WAN Performance Is to Use Bandwidth