Cisco Systems GRP-B manual nnnn, 0117, Processor

Starting the System and Observing Initial Conditions

For AC-input power supplies, the green AC OK LED should go on. For DC-input power supplies, the green input OK LED should go on. For both types of power supplies, the output fail LED should be off.

Step 2 Listen for the system blower modules or fan trays in the router; you should immediately hear them operating. In a noisy environment, place your hand in front of the exhaust vents to verify that the blower modules are operating.

Step 3 During the GRP boot process, observe the GRP alphanumeric display LEDs, which are located at one end of the GRP, near the ejector lever. (See Figure 12.)

The 4-digit displays show system messages and displays a sequence similar to that shown in Table 8.

Figure 12 GRP Alphanumeric Display LEDs (Front Panel View)

PROCESSOR

Upper alphanumeric

LED display (four digits)

Lower alphanumeric

LED display (four digits)

H10780

Table 8	GRP Alphanumeric Display LED Sequences
LED Display		Description
MRAM		GRP microcode loads into MBus random-access memory (RAM); where nnnn
nnnn		is the microcode version. For example, Microcode Version 1.17 displays as
		0117.1
MSTR		This GRP is enabled and recognized by the system.
RP

1. The version of microcode running on your GRP might be different.

Starting the System and Observing Initial Conditions

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