8.3. Configure and verify Frame Relay on Cisco routers

Frame Relay is still one of the most popular WAN services deployed over the past decade, and there's a good reason for this—cost. And it's a rare network design or designer that has the privilege to ignore that all-important cost factor!

By default, Frame Relay is classified as a non-broadcast multi-access (NBMA) network, meaning it doesn't send any broadcasts like RIP updates across the network.

Frame Relay has at its roots a technology called X.25, and it essentially incorporates the components of X.25 that are still relevant to today's reliable and relatively "clean" telecommunications networks, while leaving out the no-longer-needed error-correction components. It's substantially more ...

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