Cisco Systems XR 12406 manual Troubleshooting the Line Cards, Ios, Mstr

Chapter 4 Troubleshooting the Installation

Troubleshooting the Processor Subsystem

Table 4-4	RP Alphanumeric LED Messages (continued)
LED Display1		Indications2
IOS		The Cisco XR IOS software is up and running
UP
MSTR		The RP is enabled and recognized by the system
RP

1.The messages shown do not indicate a specific sequence.

2.Some messages appear for a fraction of a second; others last several seconds.

Troubleshooting the Line Cards

As each line card powers up, a power-on self-test (POST) is performed on the line card memory. A full set of field diagnostics can also be run on a line card from the system console, providing a pass/fail message both in the line card alphanumeric LED display and on the system console.

To help isolate a problem with a line card, visually check the two alphanumeric LED displays.

•Are both alphanumeric LED displays on?

The two displays are powered separately. The left display receives power from the DC-DC converter on the line card. The right display is powered directly from the backplane. Therefore, even if the line card has not powered up, the right display could be on.

•If both displays are off:

–The line card may not be fully seated into the backplane connector.

–There may be a problem with the MBus module on the line card.

–The system power could be off.

•If both displays are on:

–Check the message being displayed. As soon as the DC-DC converter is turned on by the MBus module, the processor on the line card begins the boot process. Status messages are displayed in the alphanumeric displays as the boot process continues on the line card.

The system attempts to boot identical line cards in parallel. In addition, the system boots line cards as soon as they are powered on and become available for backup.

	Cisco XR 12406 Router Installation Guide
4-18	OL-13831-01