Distributed Name Service (DNS) Management Operations Manual

How to Define DNS Names
Building and Modifying the DNS Database
4–20 31258 Tandem Computers Incorporated
When you add an alias type definition, you specify the following:
The alias type name
An owner (usually your company name)
A type number, which must be unique among type numbers defined by the owner
Optional list of subsystem-object types for objects that can have this type of alias
You can also specify the default domain for definitions of aliases of a type. See
“DOMAIN Attribute for SSTYPE Definitions” earlier in this section for more
information on how alias names can inherit their default domains from their
associated alias type definitions.
Specific Characteristics for ALIASTYPE Names
Names selected for alias types must have the following characteristics:
Start with a letter and be composed of alphanumeric characters. Embedded dash
characters (-) can be used as separators.
Be no longer than 16 characters.
Be unique on each DNS database which they are defined.
Defining Subsystem-Object
Names
As defined earlier, the name that a managing subsystem uses to refer to an object is
called the object’s subsystem-object name (SSOBJECT). It is also known as the
subsystem-defined name. The definition includes information that applications need
to control the object. For example, it identifies the object type and the process to which
commands must be sent. Figure 4-10 displays the relationships and dependencies of
SSOBJECT name definitions.
When you add an SSOBJECT definition, you specify the following:
The SSOBJECT name
The object type (SSTYPE)
The name of the manager (SSMANAGER), if the object has a manager
The SSTYPE and SSMANAGER names must already exist to be included in the
SSOBJECT definition.
When adding a subsystem-object, you can also specify the default domain for untyped
aliases referring to the object. DNSCOM also allows you to add aliases for an object as
you add the object itself.