Troubleshooting the Processor Subsystem
The MBus module processor begins to operate as soon as power is applied to the system. The MBus processor determines what type of card it is mounted on and whether it should turn on the card’s
To operate at all, a minimally configured Cisco 12008 must have a RP. However, the system can operate without any line cards, as long as no line card is in partial contact with the backplane pins.
A line card that is only partially inserted into the backplane sends incomplete signals to the RP, which can cause the system to hang. First ensure that the RP is installed properly and that the system software has initialized successfully. Then, if necessary, you can troubleshoot the individual line cards.
A
Troubleshooting the RP
To isolate a problem with the RP, assess the following:
•Are both RP alphanumeric displays on?
—If both displays are off, the RP may not be fully seated in the backplane, there may be a problem with the MBus module on the RP, or the system power supply may be off.
The two alphanumeric displays are powered separately. The top display receives power from the onboard
—If both displays are on, check the message being displayed.
As soon as the
Troubleshooting the Installation
