Technical data

Installing and Operating BayStack ARN/DC Routers
4-2
116273-A Rev. 00
Verifying Router Requirements
When you install an adapter module as an upgrade to your existing hardware
configuration, verify the following:
• The ARN/DC 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 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.
• The ARN/DC contains sufficient random-access memory (RAM) for its
software requirements. Configuring software for additional interfaces may
increase the ARN/DC memory requirements.
Powering Down
Before installing a WAN adapter module:
4.
Turn off power to the ARN/DC.
Move the back-panel power switch to the OFF position (0) by inserting your
finger or a narrow tool through the opening in the protective casing to push the
toggle switch down. Refer to Figure 1-20 in Chapter 1.
Warning:
You cannot hot-swap ARN/DC WAN adapter modules.