When you first encounter a system problem:
If a problem is beyond the scope of this chapter, see Contacting Customer Support and Returning Hardware for further instructions.
Running the show version, show hardware, and show environment commands is often a good first step when trying to troubleshoot a problem.
Each line module is initialized independently. As a result, the command-line interface (CLI) on the switch route processor (SRP) module might become available before the line modules have completed initialization. Commands relating to a line module might fail if the module has not completed initialization. Use the show version command to display line module status. Do not enter commands for a line module until its state is online.