SCM COM1 Operating Modes, Data Flow in Through Mode | Compaq GS160

8.3SCM COM1 Operating Modes

The SCM can be configured to manage different data flow paths defined by the com1_mode environment variable. In through mode (the default), all data and control signals flow from the system COM1 port through the SCM to the active external port. You can also set bypass modes so that the signals partially or completely bypass the SCM. The com1_mode environment variable can be set from either SRM or the SCM. See Section 8.7.1.

Figure 8–2 Data Flow in Through Mode

QBBs (PSMs)

PCI Boxes (PBMs)

H-Switch (HPM)

System

SRM Console Operating System

COM1

SCM Modem Port (Remote)

DUART

COM1 Port

UART

Modem Port

UART

CSB

SCM Processor

UART

Modem		Modem

SCMnn>

Remote System

Management Console

SCM Port (Local)

SCMnn>

Local System Management Console

PK-0627-99

8-6 AlphaServer GS80/160/320 User’s Guide

Image 144

Compaq GS160, GS80, GS320 manual SCM COM1 Operating Modes, Data Flow in Through Mode

Contents

User’s Guide Order Number EK-GS320-UG. B01Compaq Computer Corporation First Printing, May Contents GS160/320 System Configuration Rules GS80 Rack System Configuration RulesBooting and Installing an Operating System GS80 Rack System Overview Using the System Control Manager Chapter OperationAppendix a Jumpering Information Glossary Index Examples Figures Tables Vii Viii Preface Intended AudienceDocument Structure AlphaServer 80/160/320 Family Documentation Documentation TitlesInformation on the Internet Order Number Title Chapter Introduction Introduction AlphaServer GS160/320 and GS80 Systems AlphaServer GS80/160/320 User’s Guide AlphaServer GS160/320 System AlphaServer GS80 SystemSystem Management Console LFU Loadable Firmware Update Utility Firmware and Utilities OverviewSRM Console System Control Manager SCM System Architecture Sample System ArchitecturePage Chapter GS160/320 System Overview GS160/320 System Overview System Characteristics System Box CharacteristicsCharacteristic Specification Power Cabinet and System Environmental Characteristics Power Cabinet ElectricalSpecifications Environmental System Box Block Diagram 16-Processor System System Box Architecture System Box Block Diagram 8-Processor System Quad Building Block QBB Components Shows two QBBs back to back in the system box GS160/320 System Overview Backplane Backplane System Box, Front View GS160/320 System Overview CPU Module CPU Module Memory Module Memory Module Directory Module Directory Module Power Modules Power Modules Power System Manager Module 10 Power System Manager Module Clock Splitter Module 11 Clock Splitter Module 8 I/O Riser Module 12 I/O Riser Module Global Port Module 13 Global Port Module Distribution Board 14 Distribution Board 15 Distribution Board in Single-Box System Hierarchical Switch 16 Hierarchical Switch GS160/320 System Overview Power System 17 Power System GS160/320 System Overview AC Input Box 18 AC Input Box AC Input Box Circuit Breakers Circuit Breaker Lines Protected PCI I/O 19 PCI Master Box BA54A-AA PCI Box BA54A-BA PCI Box Control Panel 20 Control Panel GS160/320 System Overview Control Panel LEDs 21 shows the various control panel LED status indications GS160/320 System Configuration Rules GS160 System Cabinet GS160 System GS160 Configuration Rules About the System Cabinet GS320 System Cabinets GS320 System GS320 System Configuration Rules Power Cabinet Power Cabinet Configuration 32-P System Power System Requirements Power Supply Slot Assignments Show the power supply slot assignments in each power subrack Power Supply Configuration Rules System Box System Box QBB Cabinet Front System Box Configuration Rules System Box QBB Cabinet Rear QBB Color Code QBB Center Bar Color Code Cabinet Front QBB Center Bar Color Code Cabinet Rear Memory Configurations Memory Module and Directory Module Memory Configuration Guidelines Directory Dimm Type Memory Array Size Part Number Memory Interleaving Guidelines Interleaving Memory ModulesMemory Interleaving Guidelines Memory Interleaving Guidelines PCI Boxes 10 Sample I/O Subsystem GS160/320 System Configuration Rules PCI Box Slot Configuration 11 PCI Slot Locations PCI Slot Configuration Guidelines PCI Slots and Logical HosesLogical Hoses Remote I/O Riser Logical Hose 12 BA356 Storage Device Configurations Expander Cabinet Chapter GS80 Rack System Overview GS80 Rack System Overview Rack System Characteristics System Drawer CharacteristicsCharacteristic Specification Rack System Characteristics Two-Drawer Block Diagram System Drawer Architecture GS80 Rack System Overview System Drawer Modules System Drawer Modules System Drawer Backplane Page GS80 Rack System Configuration Rules GS80 Rack System Configuration Rules Rack Rack houses a maximum of two system drawers About the Rack Cabinet Rack Variants Rack Power System Two-Drawer Rack Power System About the Power System Page Chapter Booting and Installing an Operating System Booting and Installing an Operating System Powering Up the System SCM Power-Up DisplayExample 6-1 SCM Power-Up Display On next QBB0 Box-0 SRM Power-Up Display Example 6-2 SRM Power-Up Display On next Entering idle loop initializing keyboard Idle process PID Setting Boot Options Bootdefdev Bootfile Set bootdefdev bootdeviceSet bootfile filename Example Bootosflags Set bootosflags flagsvalue OpenVMS Boot Flag Settings FlagsValue Bit Number Meaning 4 ei*0inetinit or ew*0inetinit Set ei*0inetinit value or set ew*0inetinit value Bootp Bootp,mop5 ei*0protocols or ew*0protocols Booting Tru64 Unix Example 6-3 Booting Tru64 Unix from a Local Scsi Disk Example 6-3 Booting Tru64 Unix from a Local Scsi Disk Booting Tru64 Unix Over the Network Example 6-4 RIS Boot P00 set eia0protocols bootp P00 set eia0inetinit bootp Installing Tru64 Unix Example 6-5 Tru64 Unix Installation Display Booting and Installing an Operating System Booting OpenVMS Example 6-6 Booting OpenVMS from a Local Disk Booting and Installing an Operating System Booting OpenVMS from the InfoServer Example 6-7 InfoServer Boot Function Installing OpenVMS Example 6-8 OpenVMS Installation Menu Booting and Installing an Operating System Page Chapter Operation Operation SRM Command Overview Summary of SRM CommandsSRM Console Command Notation Formats for SRM Console Commands AttributeConditions Special Characters for SRM Console Character Setting the Control Panel Message Example 7-1 Set OcpText Command Displaying the System Configuration Show Boot CommandExample 7-2 Show Boot Show Config Command Example 7-3 Show Config On next IOD revs Local Link NE ML rev Operation DEGPA-SA Compaq CDR-8435 RZ1CB-CA PowerStorm Acer Labs M1543C Show Device Command Example Show Device Device Naming Conventions Category Description Show Memory Command Show memory command displays the main memory configurationExample Show Memory Setting SRM Environment Variables Setting SRM Console Security Changing the Default Boot Device Setting Tru64 Unix or OpenVMS Systems to Auto Start Soft Partitioning About Soft Partitioning SRM Environment Variables for Soft Partitions Environment VariableDefinition Example 7-6 Defining Soft Partitions Instance Memory Hard Partitioning SCM Environment Variables for Hard PartitionsExample 7-7 Defining Hard Partitions Hpcount Hpqbbmaskx Operation Page Using the System Control Manager Using the System Control Manager CSB Block Diagram Console Serial Bus Subsystem Using the System Control Manager System Control Manager Overview Configuration, Error Log, and Asset Information SCM FirmwarePSMs, PBMs, and HPMs Data Flow in Through Mode SCM COM1 Operating Modes Through Mode Local Mode Data Flow in Bypass Mode Bypass Modes Snoop Mode Soft Bypass Mode Firm Bypass Mode Hard Bypass Mode Console Device Setup Setups for SCM PCI Box Entering SCM Commands from a VGA Console Entering the SCMEntering from a Console Device SRM Environment Variables for COM1 SCM Command-Line Interface SCM Commands SCM Commands Command Conventions Power-Up Messages Defining the COM1 Data Flow Status Command Fields Displaying the System StatusField Field Meaning Displaying the System Environment ➊ ➋ ➏ ➐ ➑ ➒ On next Power On and Off, Reset, and Halt Power On and Power Off Reset Halt In and Continue Configuring Remote Dial-In Example 8-1 Dial-In ConfigurationModem Initialization String Dialing Configuring Alert Dial-Out Example 8-2 Alert Dial-Out Configuration Alert Condition Elements of Dial String and Alert String Dial StringAlert String Resetting the Escape Sequence Troubleshooting Tips SCM TroubleshootingSymptom Suggested Solution SCM Troubleshooting Page Appendix a Jumpering Information PCI Backplane JumpersTable A-1 PCI Backplane Jumpers Jumper Jumper Function, When Installed HPM JumpersStandard I/O Module Jumpers Table A-2 HPM Jumpers Glossary Switch Hose SwitchSwitch power Update Utility Local and remote Partition PCI backplaneManager PCI expansion box PCI master box Power cabinet Power inputPower system Module Remote testing Vaux Glossary-5 Glossary-6 Index Index-1 Index-2 SCM Index-3