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Cisco CCNA Routing and Switching 200-120: Flash Cards and Exam Practice Pack by Eric Rivard

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Section 7. Establishing a WAN Connection Using Frame Relay

Frame Relay was a popular technology used to connect WAN links in the 1990s and early 2000s because of its speed, reliability, and cost. Frame Relay is a packet-switched technology. Packet-switched networks enable end devices to dynamically share the WAN medium and bandwidth. Currently, Frame Relay has been largely replaced by newer technologies such as MPLS and Ethernet emulation. However, because of its early popularity, you can still find Frame Relay networks today.

In a Frame Relay network, data travels through the service provider’s network along with other customers’ data. The service provider programs switches to switch data in the right direction so that it does not get crossed ...

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