3-7
Operation
SMB-10 Bus
The SMB-10 is a 10 Mbps management bus located within the SmartSwitch 9000.
This bus is used for inter-chassis communication of modules as well as serving as
a side-band management channel into the SmartSwitch 9000.
The SMB-10 is externalized from the chassis via an optional Ethernet Port
Interface Module (EPIM) located on the front of the Environmental Module.
Through an EPIM connection, full-SNMP management of the SmartSwitch 9000 is
available side-band from user data. Modules that share the SMB-10 bus
periodically send out loop-back packets to ensure the validity of SMB-10. If a fault
is detected on the SMB-10, the SMB-1 can be used as an alternate communication
channel by the modules.
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 9H423-26 module 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 other’s 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 9H423-26 is designed to continue functioning in the
event of a diagnostic controller fault.
DC/DC Converter
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.
INB Interface
The INB Backplane is designed to transport fixed-length data blocks between
modules in the SmartSwitch 9000 using an INB Time Division Multiplexing
(ITDM) 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 time slices of the INB manager operate in all three
modes at once, without user intervention.
Summary of Contents for SmartSwitch 9000
Page 1: ...SmartSwitch 9000 9H423 26 User s Guide 9032242 02 ...
Page 2: ......
Page 30: ...Operation 3 10 ...
Page 34: ...LANVIEW LEDs 4 4 ...
Page 38: ...Specifications 5 4 ...