ADC Telecommunications, Inc.
76 CHAPTER 4: CHASSIS CONFIGURATION
Understanding Chassis Identification
The Cuda 12000 chassis has two key identifiers:
■Chassis Number — The Cuda 12000 chassis is shipped with a unique
chassis-number, which is a fixed value assigned to each chassis during
manufacturing at the ADC plant.
■Chassis ID — Each Cuda 12000 switch should be configured with a
unique chassis identification (ID) number. The chassis ID serves as a router
management tool.
Understanding Management Module Redundancy
Each chassis is equipped with at least one management module, which
controls the chassis. For management module redundancy, the Cuda 12000
supports installation of two management modules. When two management
modules are installed, one acts as the primary management module and the
other acts as the secondary management module.
When a Cuda 12000 that is configured with two management modules
reboots, the Cuda randomly determines which module acts as the primary
and which module acts as the secondary. The STATUS DISPLAY LED on the
management module indicates whether the management module is a
primary or secondary (for example, the LED on a primary management
module displays “PRIMARY”).
The primary management module is the active management module on the
Cuda 12000. When you issue CLI commands or use the Cuda Desktop GUI
to manage the Cuda 12000, you are interacting with the primary
management module.
The secondary management module has two responsibilities:
■Monitor the state of the primary management module
■Keep its mirrored disk sectors synchronized with the primary
management module