RSVP Scaling Considerations
A consideration for your RSVP deployment is the issue of scaling RSVP in large networks. As mentioned earlier, routers keep track of information contained in Path and Resv messages and maintain stateful information for each reservation. It is possible in large networks for a high number of active reservations to adversely affect router resources such as memory and the CPU. As such, consider the current capacity of your routers as you plan deployments of RSVP applications. As with so much in networking, there are no golden rules—networks, goals, and applications vary. Consider getting Cisco involved in your particular project for design and planning assistance.
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