Bypass Modes, Data Flow in Bypass Mode | Compaq GS320, GS160, GS80

8.3.1Bypass Modes

For modem connection, you can set the operating mode so that data and control signals partially or completely bypass the SCM. The bypass modes are snoop, soft bypass, and firm bypass.

Figure 8–3 Data Flow in Bypass Mode

QBBs (PSMs)

PCI Boxes (PBMs)

H-Switch (HPM)

System

SRM Console Operating System

COM1

Bypass

DUART

COM1 Port

UART

Modem Port

UART

CSB

SCM Processor

SCM Modem

Port (Remote)

Modem

Modem

UART

SCM Port (Local)

SCMnn>	SCMnn>
Remote System	Local System
Management Console	Management Console
	PK-0627A-99

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

Image 146

Compaq GS320, GS160, GS80 manual Bypass Modes, Data Flow in Bypass Mode

Contents

Compaq Computer Corporation User’s GuideOrder Number EK-GS320-UG. B01 First Printing, May Contents Booting and Installing an Operating System GS160/320 System Configuration RulesGS80 Rack System Configuration Rules GS80 Rack System Overview Appendix a Jumpering Information Using the System Control ManagerChapter Operation Glossary Index Examples Figures Tables Vii Viii Document Structure PrefaceIntended Audience Information on the Internet AlphaServer 80/160/320 Family DocumentationDocumentation Titles Order Number Title Chapter Introduction Introduction AlphaServer GS160/320 and GS80 Systems AlphaServer GS80/160/320 User’s Guide System Management Console AlphaServer GS160/320 SystemAlphaServer GS80 System SRM Console LFU Loadable Firmware Update UtilityFirmware and Utilities Overview System Control Manager SCM System Architecture Sample System ArchitecturePage Chapter GS160/320 System Overview GS160/320 System Overview Characteristic System CharacteristicsSystem Box Characteristics Specification Specifications Power Cabinet and System Environmental CharacteristicsPower Cabinet Electrical 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 Memory Interleaving GuidelinesInterleaving Memory Modules Guidelines Memory Interleaving Guidelines PCI Boxes 10 Sample I/O Subsystem GS160/320 System Configuration Rules PCI Box Slot Configuration 11 PCI Slot Locations Logical Hoses PCI Slot Configuration GuidelinesPCI Slots and Logical Hoses Remote I/O Riser Logical Hose 12 BA356 Storage Device Configurations Expander Cabinet Chapter GS80 Rack System Overview GS80 Rack System Overview Characteristic Specification Rack System CharacteristicsSystem Drawer Characteristics 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 Example 6-1 SCM Power-Up Display Powering Up the SystemSCM 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 Set bootfile filename BootfileSet bootdefdev bootdevice 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 5 ei*0protocols or ew*0protocols BootpBootp,mop 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 Console SRM Command OverviewSummary of SRM Commands Command Conditions Notation Formats for SRM Console CommandsAttribute Special Characters for SRM Console Character Setting the Control Panel Message Example 7-1 Set OcpText Command Example 7-2 Show Boot Displaying the System ConfigurationShow Boot Command 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 Example Show Memory Show Memory CommandShow memory command displays the main memory configuration 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 Definition SRM Environment Variables for Soft PartitionsEnvironment Variable Example 7-6 Defining Soft Partitions Instance Memory Example 7-7 Defining Hard Partitions Hard PartitioningSCM Environment Variables for 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 PSMs, PBMs, and HPMs Configuration, Error Log, and Asset InformationSCM Firmware 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 from a Console Device Entering SCM Commands from a VGA ConsoleEntering the SCM SRM Environment Variables for COM1 SCM Command-Line Interface SCM Commands SCM Commands Command Conventions Power-Up Messages Defining the COM1 Data Flow Field Status Command FieldsDisplaying the System Status 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 Modem Initialization String Configuring Remote Dial-InExample 8-1 Dial-In Configuration Dialing Configuring Alert Dial-Out Example 8-2 Alert Dial-Out Configuration Alert Condition Alert String Elements of Dial String and Alert StringDial String Resetting the Escape Sequence Symptom Troubleshooting TipsSCM Troubleshooting Suggested Solution SCM Troubleshooting Page Table A-1 PCI Backplane Jumpers Appendix a Jumpering InformationPCI Backplane Jumpers Jumper Standard I/O Module Jumpers Jumper Function, When InstalledHPM Jumpers Table A-2 HPM Jumpers Glossary Switch power Switch HoseSwitch Update Utility Local and remote Manager PCI expansion box PartitionPCI backplane PCI master box Power system Power cabinetPower input Module Remote testing Vaux Glossary-5 Glossary-6 Index Index-1 Index-2 SCM Index-3