Cisco 12406 - Manual

C H A P T E R
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Cisco 12006 and Cisco 12406 Router Installation and Configuration Guide
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Troubleshooting the Installation
This chapter provides troubleshooting guidelines for Cisco 12006 and
Cisco 12406 Routers. If the solutions provided in this chapter do not make the
router fully functional, contact your Cisco service representative for assistance.
• Performing Other Configuration Tasks, page 4-1
• Problem Solving with Subsystems, page 4-14
Performing Other Configuration Tasks
This section describes the following additional configuration tasks.
• Configuring the Software Configuration Register, page 4-1
• Recovering a Lost Password, page 4-11
Configuring the Software Configuration Register
The software configuration register is a 16-bit register in NVRAM that you use to
define specific system parameters. You can set or change the contents of this
register to accomplish the following tasks:
• Define boot sources for the default Cisco IOS software, assigning them in the
following order of precedence:
– Flash memory card inserted in PCMCIA slot 0
– TFTP server on the network