Overview of the Model 5782 ATM Virtual Network Router
119557-A Rev. 00
1-13
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.
The supervisory module is an intelligent interface between the Model 5000BH
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
•
Stores the primary module configurations
•
Restores the module configuration after the module power is 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.
Service Port
The service port, located on the front panel of the Model 5000BH chassis,
provides a switched serial communication link between the service port and any
module in the hub, including the supervisory module. By connecting a terminal to
this port, you can access the Technician Interface and perform the initial setup of
the Model 5782 VNR installed in the hub.
For more information about using the service port, see
Chapter 3, “Starting the
Model 5782 VNR
.”
Technician Interface
The Technician Interface resides in the router operating system kernel and
automatically loads when you boot the router. You access the Technician Interface
through the Model 5000BH chassis service port. Technician Interface scripts let
you display information about various protocols and network services and enable
or disable protocols, circuits, lines, and services.
