Frame Relay Components, part 2 - Page 2
VCs often incur a financial obligation to the service provider. As Figure 15-9 illustrates, even relatively small networks can become quite costly very quickly based on the number of VCs alone. For this reason, hub-and-spoke network configurations are fairly common. As illustrated here, a 30-node network would require approximately 450 VCs in a fully meshed configuration, compared to the 29 VCs necessary to support a hub-and-spoke configuration.
To illustrate the potential cost savings of deploying a hub-and-spoke network over a fully meshed network environment, see Figure 15-10. As is reflected here, a difference of nearly 500 VCs exists between a fully meshed and a hub-and-spoke configuration. If it is not mandated that a fully meshed network be used, it is certainly more cost effective to design and implement a hub-and-spoke or partial-mesh configuration.
(Click image for larger view in a new window)