System Diagnostic Controller; Dc/Dc Converter; Inb Interface - Cabletron Systems 9E423-36 User Manual

Ethernet module

Hide thumbs Also See for 9E423-36:

Table of Contents

Operation

System Diagnostic Controller

This diagnostic controller is composed of a Z-80 microprocessor and its

supporting logic. The diagnostic controller is designed to control the power-up

sequencing of modules, monitor the 9E423-36 input and output power

parameters, keep watch over the main host processor, monitor the temperature,

and control the SMB LANVIEW diagnostic LEDs. Although the system diagnostic

controller and the main host processor can operate independently of each other if

needed, they exchange information about each others status and overall module

condition. The information gathered by the diagnostic controller is available to

the network manager via local/remote management and the LCD located on the

environment module. The 9E423-36 is designed to continue functioning in the

event of a diagnostic controller fault.

The DC/DC converter converts the 48 VDC on the system power bus to the

necessary operating voltages for its host network services module. The diagnostic

controller monitors and controls the operation of the DC/DC converter.

The INB Backplane is designed to transport ﬁxed length data blocks between

modules in the SmartSwitch 9000 using a Time Division Multiplexing (TDM)

design. The SmartSwitch 9000 INB bus delivers 2.5 Gbps of true data bandwidth

with all control and management communication being serviced on the 8-bit out-

of-band bus. The INB can time slice its bandwidth using one of three methods:

• The default method is standard TDM round-robin bandwidth arbitration.

• The second method is for modules to reserve a speciﬁc amount of bandwidth

using MONARCH, Cabletron's INB Bandwidth Arbitrator.

• The third method permits the lowest slot number to use any bandwidth not

used by the previous two methods.

3-4

Table of Contents

Smartswitch 9000 9e423-36