Document revision date: 19 July 1999

Appendix G
Appendix G	PEDRIVER Congestion Control and Channel Selection
G.1	PEDRIVER Congestion Control
G.1.1	Congestion Caused by Retransmission
G.1.2	HELLO Multicast Datagrams
G.2	Transmit Channel Selection
G.2.1	Preferred Channel
G.2.2	Restrictions
Index
Index
Examples
7-1	Sample Commands for Creating OpenVMS Cluster Queues
7-2	Common Procedure to Start OpenVMS Cluster Queues
8-1	Sample Interactive CLUSTER_CONFIG.COM Session to Add a Computer as a Boot Server
8-2	Sample Interactive CLUSTER_CONFIG.COM Session to Add a Computer Running DECnet--Plus
8-3	Sample Interactive CLUSTER_CONFIG.COM Session to Add a VAX Satellite with Local Page and Swap Files
8-4	Sample Interactive CLUSTER_CONFIG.COM Session to Remove a Satellite with Local Page and Swap Files
8-5	Sample Interactive CLUSTER_CONFIG.COM Session to Enable the Local Computer as a Disk Server
8-6	Sample Interactive CLUSTER_CONFIG.COM Session to Change the Local Computer's ALLOCLASS Value
8-7	Sample Interactive CLUSTER_CONFIG.COM Session to Enable the Local Computer as a Boot Server
8-8	Sample Interactive CLUSTER_CONFIG.COM Session to Change a Satellite's Hardware Address
8-9	Sample Interactive CLUSTER_CONFIG.COM Session to Enable the Local Computer as a Tape Server
8-10	Sample Interactive CLUSTER_CONFIG.COM Session to Change the Local Computer's TAPE_ALLOCLASS Value
8-11	Sample Interactive CLUSTER_CONFIG.COM Session to Convert a Standalone Computer to a Cluster Boot Server
8-12	Sample Interactive CLUSTER_CONFIG.COM CREATE Session
10-1	Sample NETNODE_UPDATE.COM File
10-2	Defining an Alpha Satellite in a VAX Boot Node
10-3	Defining a VAX Satellite in an Alpha Boot Node
10-4	Sample SYSMAN Session to Change the Cluster Password
C-1	Crossed Cables: Configuration 1
C-2	Crossed Cables: Configuration 2
C-3	Crossed Cables: Configuration 3
C-4	Crossed Cables: Configuration 4
C-5	Crossed Cables: Configuration 5
C-6	CI Device-Attention Entries
C-7	LAN Device-Attention Entry
C-8	CI Port Logged-Message Entry
D-1	Portion of LAVC$FAILURE_ANALYSIS.MAR to Edit
F-1	SDA Command SHOW PORT Display
F-2	SDA Command SHOW PORT/VC Display
F-3	SDA Command SHOW PORT/BUS Display
F-4	SDA Command SHOW LAN/COUNTERS Display
Figures
1-1	OpenVMS Cluster System Communications
1-2	Single-Point OpenVMS Cluster System Management
2-1	OpenVMS Cluster System Architecture
3-1	OpenVMS Cluster Configuration Based on CI
3-2	DSSI OpenVMS Cluster Configuration
3-3	LAN OpenVMS Cluster System with Single Server Node and System Disk
3-4	FDDI OpenVMS Cluster System: Sample Configuration
3-5	FDDI in Conjunction with Ethernet in an OpenVMS Cluster System
3-6	Two-Node MEMORY CHANNEL OpenVMS Cluster Configuration
3-7	Three-Node MEMORY CHANNEL OpenVMS Cluster Configuration
3-8	Three-Node OpenVMS Cluster Configuration Using a Shared SCSI Interconnect
3-9	Four-Node OpenVMS Cluster Configuration Using a Fibre Channel Interconnect
5-1	Configuration Example of Resource Sharing
5-2	Directory Structure on a Common System Disk
5-3	File Search Order on Common System Disk
5-4	Translation Order Specified by LNM$FILE_DEV
6-1	Dual-Ported Disks
6-2	Dual-Pathed Disks
6-3	Configuration with Cluster-Accessible Devices
6-4	Disk and Tape Dual Pathed Between HSC Controllers
6-5	Disk and Tape Dual Pathed Between Computers
6-6	Device Names in a Mixed-Interconnect Cluster
6-7	SCSI Device Names Using a Node Allocation Class
6-8	Device Names Using Port Allocation Classes
6-9	Shadow Set With Three Members
6-10	Shadow Sets Accessed Through the MSCP Server
7-1	Sample Printer Configuration
7-2	Print Queue Configuration
7-3	Clusterwide Generic Print Queue Configuration
7-4	Sample Batch Queue Configuration
7-5	Clusterwide Generic Batch Queue Configuration
10-1	VAX Nodes Boot Alpha Satellites
10-2	Alpha and VAX Nodes Boot Alpha and VAX Satellites
C-1	Correctly Connected Two-Computer CI Cluster
C-2	Crossed CI Cable Pair
F-1	Protocols in the SCA Architecture
F-2	Channel-Formation Handshake
F-3	Lost Messages Cause Retransmissions
F-4	Lost ACKs Cause Retransmissions
F-5	NISCA Headers
F-6	Ethernet Header
F-7	FDDI Header
F-8	DX Header
F-9	CC Header
F-10	TR Header
Tables
1-1	System Management Tools
2-1	Communications Services
2-2	Transitions Caused by Adding a Cluster Member
2-3	Transitions Caused by Loss of a Cluster Member
3-1	Satellite Booting Process
4-1	Information Required to Perform an Installation
4-2	Installing Layered Products on a Common System Disk
4-3	Procedure for Configuring the DECnet Network
5-1	Default Clusterwide Logical Name Tables and Logical Names
5-2	Alias Collisions and Outcomes
5-3	Security Files
5-4	Procedure for Coordinating Files
6-1	Device Access Methods
6-2	Changing a DSSI Allocation Class Value
6-3	Ensuring Unique Tape Access Paths
6-4	Examples of Device Names with Port Allocation Classes 1-32767
6-5	Examples of Device Names With Port Allocation Class 0
6-6	MSCP_LOAD and TMSCP_LOAD Parameter Settings
6-7	MSCP_SERVE_ALL and TMSCP_SERVE_ALL Parameter Settings
6-8	MSCP Load-Capacity Ratings Based on Ethernet
8-1	Summary of Cluster Configuration Functions
8-2	Preconfiguration Tasks
8-3	Data Requested by CLUSTER_CONFIG_LAN.COM and CLUSTER_CONFIG.COM
8-4	Preparing to Add Computers to an OpenVMS Cluster
8-5	Preparing to Add a Quorum Disk Watcher
8-6	Preparing to Remove Computers from an OpenVMS Cluster
8-7	Preparing to Remove a Quorum Disk Watcher
8-8	CHANGE Options of the Cluster Configuration Procedure
8-9	Tasks Involved in Changing OpenVMS Cluster Configurations
8-10	Actions Required to Reconfigure a Cluster
9-1	Sample System Disk I/O Activity and Boot Time for a Single VAX Satellite
9-2	Sample System Disk I/O Activity and Boot Times for Multiple VAX Satellites
9-3	Checklist for Satellite Booting
9-4	Procedure for Defining a Pseudonode Using DECnet MOP Services
9-5	Procedure for Defining a Pseudonode Using LANCP MOP Services
9-6	Procedure for Creating Different DECnet Node Databases
9-7	Procedure for Creating Different LANCP Node Databases
9-8	Controlling Satellite Booting
9-9	Techniques to Minimize Network Problems
10-1	Backup Methods
10-2	Upgrading the OpenVMS Operating System
10-3	OPCOM System Logical Names
10-4	AUTOGEN Dump-File Symbols
10-5	Common SYSUAF.DAT Scenarios and Probable Results
10-6	Reducing the Value of Cluster Quorum
A-1	Adjustable Cluster System Parameters
A-2	Cluster System Parameters Reserved for OpenVMS Use Only
B-1	Building a Common SYSUAF.DAT File
C-1	Sequence of Booting Events
C-2	Alpha Booting Messages (Alpha Only)
C-3	Port Failures
C-4	How to Verify Virtual Circuit States
C-5	Informational and Other Error-Log Entries
C-6	Port Messages for All Devices
C-7	Port Messages for LAN Devices
C-8	OPA0 Messages
D-1	Procedure for Using the LAVC$FAILURE_ANALYSIS.MAR Program
D-2	Creating a Physical Description of the Network
E-1	Subroutines for LAN Control
E-2	SYS$LAVC_START_BUS Status
E-3	SYS$LAVC_STOP_BUS Status
E-4	SYS$LAVC_DEFINE_NET_COMPONENT Parameters
E-5	SYS$LAVC_DEFINE_NET_PATH Parameters
E-6	SYS$LAVC_DEFINE_NET_PATH Status
F-1	SCA Protocol Layers
F-2	Communication Paths
F-3	System Parameters for Timing
F-4	Channel Timeout Detection
F-5	SHOW PORT/VC Display
F-6	Channel Formation
F-7	Fields in the Ethernet Header
F-8	Fields in the FDDI Header
F-9	Fields in the DX Header
F-10	Fields in the CC Header
F-11	Fields in the TR Header
F-12	Tracing Datagrams
F-13	Capturing Retransmissions on the LAN
F-14	Capturing All LAN Packets (LAVc_all)
F-15	Setting Up a Distributed Enable Filter (Distrib_Enable)
F-16	Setting Up the Distributed Trigger Filter (Distrib_Trigger)
F-17	Setting Up the Distributed Enable Message (Distrib_Enable)
F-18	Setting Up the Distributed Trigger Message (Distrib_Trigger)
G-1	Conditions that Create HELLO Datagram Congestion

	privacy and legal statement
4477PRO_CONTENTS_005.HTML