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Troubleshooting
WAN
Connectivity
Problems
If you suspect that the Edge Router module has lost WAN connectivity,
perform one or more of the following troubleshooting actions:
■
Verify that you have the correct cable for your configuration. Refer to
Appendix A, Specifications, for a list of approved cables, cable
specifications, and pinouts.
■
If you are using a:
■
DCE cable
— Verify that a clock rate is defined in the router WAN
interface configuration.
■
DTE cable
— Verify that no clock rate is defined in the router WAN
interface configuration.
■
Verify that the cable’s 60-pin WAN connector is not plugged in backwards.
■
Ensure that the router configuration does not have a SHUTDOWN command
associated with the interface.
■
Verify that your router configuration is valid. Refer to the Cisco Systems
Troubleshooting Internetworking Systems
guide for more information.