Cisco CCNA Certification Exam Case Study: Frame Relay, Pings, And Routing Protocols by Chris Bryant, CCIE #12933
Cisco CCNA certification training includes troubleshooting your own work and that of others. The best CCNA training you can do is indeed troubleshooting your own Cisco router and switch configurations - as I'm always telling my students, "I can guarantee that any error you make has been made before, and you'll probably see it again one day." One such common error involves two very important Cisco CCNA certification topics - Frame Relay and routing protocols.

A student was working on her Cisco CCNA exam home lab and came up with an interesting problem. He set Frame Relay up in a hub-and-spoke configuration with R1 as the hub and R2 and R3 as the spokes. He wrote the following frame map statements:

frame-relay map ip 172.12.123.2 122

frame-relay map ip 172.12.123.3 123

He was able to ping both spokes from the hub, so he assumed every ... Read more »