Nortel Networks Passport ARN Routers Downloading New Boot and Diagnostic Code, Powering Down

Installing and Operating Passport ARN Routers

Downloading New Boot and Diagnostic Code

When installating an adapter module as an upgrade to your existing hardware configuration, you must verify that the ARN contains the minimum required version of programmable read-only memory (PROM) code for the module you are installing. BayRS release media includes the latest boot and diagnostic code at the time it is shipped, but if your upgrade requires newer code, you must manually download it to the router PROM.

To determine which version of boot and diagnostic code you need when installing a particular adapter module, see see the module-specific Supplement that ships with the module, and to the Document Change Notice or the Release Notes distributed with your BayRS release. For instructions on how to upgrade the PROM code in flash memory, refer to the Upgrading Routers guide.

Powering Down

Before installing a WAN adapter module:

1.Turn off the ARN.

Set the power switch to 0, off (refer to Figure 1-25 on page 1-30).

Warning: You cannot hot-swap ARN WAN adapter modules.

2.If present, turn off or disconnect the redundant power supply.

3.Attach an antistatic wrist strap.

Caution: Electrostatic discharge can damage hardware. You must wear the antistatic wrist strap whenever you handle printed circuit boards.

You receive an antistatic wrist strap with the adapter module. See the instructions included with the wrist strap.

The wrist strap directs static electricity from your body to the router chassis, preventing discharge to sensitive electronic components.

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