HP OpenVMS Systems Documentation
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DECnet-Plus
Planning Guide
Previous Contents Index

Chapter 5
5 DECdns, Local Namespace, and DECdts Concepts
     5.1     How DECnet-Plus Uses the Local Namespace and DECdns
     5.2     The Name Service Search Path
     5.3     How DECdns Works
     5.4     Contents of a DECdns Namespace
         5.4.1         Replicas and Their Contents
             5.4.1.1             Object Entries
             5.4.1.2             Soft Links
             5.4.1.3             Child Pointers
         5.4.2         Putting It All Together
     5.5     How DECnet-Plus Uses the DECdns Namespace
         5.5.1         Node Object Entries
         5.5.2         Backtranslation Soft Links
         5.5.3         Node Synonyms
     5.6     How DECdns Protects Names
         5.6.1         Access Rights
         5.6.2         Access Control Groups
     5.7     DECdns Management
     5.8     How DECnet-Plus Uses DECdts
     5.9     DECdts Advantages
         5.9.1         Applications Support
         5.9.2         Automatic Time Zone Changes
         5.9.3         External Time-Provider Support
         5.9.4         Quantitative Inaccuracy Measurement
     5.10     How DECdts Works
         5.10.1         Clerks
         5.10.2         Servers
             5.10.2.1             Local Servers
             5.10.2.2             Global Servers
             5.10.2.3             Couriers
     5.11     DECdts Management
Chapter 6
6 Naming Guidelines
     6.1     General Naming Guidelines
     6.2     Guidelines for Naming Clearinghouses
     6.3     Guidelines for Naming Namespaces
Chapter 7
7 Basic DECdns Namespace Planning for DECnet-Plus
     7.1     Step 1: Should You Have Multiple DECdns Namespaces?
     7.2     Step 2: Plan a Naming Policy
     7.3     Step 3: Should You Create a Directory Hierarchy?
     7.4     Step 4: Plan an Access Control Policy
     7.5     Step 5: Plan the Replication of Directories
     7.6     Step 6: Select DECdns Servers
         7.6.1         Server Placement Guidelines for LANs and Extended LANs
         7.6.2         Server Placement Guidelines for Sites Connected by a WAN
Chapter 8
8 Advanced DECdns Namespace Planning
     8.1     Planning a Directory Hierarchy
         8.1.1         Consider Geographic and Functional Directory Names
         8.1.2         Plan Access Along with Directory Structure
         8.1.3         Other Directory Planning Tips
     8.2     Replicating Directories in a Large Network
         8.2.1         Replicating the DECnet-Plus Directories
         8.2.2         How Clearinghouse Names Affect Replication
     8.3     DECdns Server Capacity Planning
Chapter 9
9 DECdns Namespace Design Example
     9.1     Part 1: Planning and Configuring the Namespace
         9.1.1         Designing the Directory Structure
         9.1.2         Planning Access Control
         9.1.3         Assessing Directory Contents
         9.1.4         Choosing Servers and Planning Replication
     9.2     Part 2: The Namespace Grows
Chapter 10
10 Preparing for DECdts
     10.1     Planning a DECdts Implementation
     10.2     Configuration Planning on a LAN
     10.3     Configuration Planning on an Extended LAN
         10.3.1         Extended LANs Using High-Performance Bridges
         10.3.2         Extended LANs Using Medium-Speed Bridges
     10.4     Configuration Planning on WANs and WAN Links
         10.4.1         LANs with WAN Links to Remote Sites
         10.4.2         LANs Connected by WAN Links
         10.4.3         WAN Networks
     10.5     Planning for External Time-Providers
     10.6     DECdts Planning Worksheet
Index
Index
Figures
1-1 Examples of Phase IV and DECnet Phase V Addresses
2-1 Autoconfigured End System NSAP
2-2 Assigned Phase IV Address NSAP
2-3 Multicircuit End System with Circuits to Two Ethernet LANs
2-4 Multicircuit End System with Two DDCMP Circuits
2-5 Area Address Portion of the NSAP Address
2-6 Source NSAP
3-1 Two-Area Phase IV LAN to Be Migrated to DECnet-Plus
3-2 Phase IV LAN with Some DECnet-Plus Systems
3-3 LAN with Link State at Levels 1 and 2
3-4 LAN with Multihomed Systems
3-5 LAN with One DECnet Phase V Area
4-1 Parts of an NSAP
4-2 Example NSAP
4-3 Example NET
4-4 Example Area Address
4-5 NSAP Fields: DNA Format Examples
4-6 NSAP Fields: OSI Format Examples
5-1 Sample DECdns LAN Configuration
5-2 Simple Lookup
5-3 Example Namespace Directory Hierarchy
5-4 Components of a DECdns Server Node
6-1 Full Name Example
9-1 The IAF Network
9-2 IAF Namespace Hierarchy
9-3 Complete IAF Namespace Hierarchy
9-4 Replication Plan for New York Servers
9-5 Expanded IAF Network
9-6 New Servers and Their Contents
9-7 New York Server Contents a Year Later
10-1 DECdts LAN Configuration
10-2 DECdts Configuration --- Unified Extended LAN
10-3 DECdts Configuration --- LAN with WAN Links
10-4 DECdts Configuration --- WAN Networks

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