Nortel 5399 安装指南
1-5
Chapter 1 Introduction
Model 5399 Remote Access Concentrator Module Hardware Installation Guide
System 5000 Common Management Bus
The management section of the backplane is the common management
bus (CMB), a high-speed, multimaster, shared-memory communication
channel that connects all modules installed in the hub to one another and
to the supervisory module. The modules installed in the hub use the CMB
to acquire and distribute configuration and status information.
bus (CMB), a high-speed, multimaster, shared-memory communication
channel that connects all modules installed in the hub to one another and
to the supervisory module. The modules installed in the hub use the CMB
to acquire and distribute configuration and status information.
The supervisory module is an intelligent interface between the Model
5000 chassis and user-installed modules. The supervisory module
provides the following services to other modules across the CMB:
5000 chassis and user-installed modules. The supervisory module
provides the following services to other modules across the CMB:
•
Maintains chassis component information and
environmental status
environmental status
•
Stores the primary module configurations
•
Restores the module configuration after the module power is
cycled or the module is reset
cycled or the module is reset
The supervisory module also supports configuration terminal support
through the service port on the front panel of the chassis.
through the service port on the front panel of the chassis.