Cisco Systems XR 12406 manual Starting the Router and Observing Initial Conditions

Chapter 3 Installing the Cisco XR 12406 Router

Manually Booting the System

The following is an example of a typical boot process:

•The RP MBus module receives the correct DC voltage and starts executing MBus software.

•The RP determines the router configuration by sending a message through the alarm card requesting all installed devices to identify themselves. Their responses provide slot numbers and card and component types. The RP, line cards, CSCs, and SFCs are then powered up.

•The power-on-reset logic of the RP is delayed long enough to allow power and both local and CSC clocks to stabilize.

•After the power-on reset logic is released, the RP begins to execute the ROM monitor software.

•If the ROM monitor is configured to autoboot, it automatically loads and boots the Cisco IOS XR software.

•If the ROM monitor is not configured to autoboot, boot the Cisco IOS XR software manually. See the “Manually Booting the System” section on page 3-39.

•When the Cisco IOS XR software boots, it polls all other cards in the system, powers them up, and loads the Cisco IOS XR software they require.

Starting the Router and Observing Initial Conditions

Observe the following conditions the first time you start your router:

•Power cables to the PDU are fully connected to both the PDU and the power source, and are secured with appropriate strain relief.

•Empty card slots or card bays are filled with card blanks. This ensures proper air flow through the chassis and electromagnetic compatibility (EMC).

•All cards are fully inserted in their cages and bays.

•All captive screws are tightened.

•Line card cable-management brackets are attached to their respective line cards.

•Interface cables are completely seated in their line card connectors.

•Interface cables are routed neatly through the chassis cable-management bracket.

	Cisco XR 12406 Router Installation Guide
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