TCP/IP Tutorial and Technical Overview - IBM Redbooks

These fields are defined as follows:
OBJECT-TYPE A textual name, called the object descriptor, for the object
type along with its corresponding object identifier defined
later.
SYNTAX The abstract syntax for the object type. It can be a choice
of SimpleSyntax (Integer, Octet String, Object Identifier,
Null) or an ApplicationSyntax (NetworkAddress, Counter,
Gauge, TimeTicks, Opaque) or other application-wide
types (see RFC 2578 for more details).
UNITS This field is optional and applies only when the object
maintains a value that is unit specific. For example, an
object that monitors time might specify UNIT “seconds” or
UNIT “minutes”.
MAX-ACCESS Defines the access that a user has to this object. Valid
values include accessible-for-notify, read-only, read-write,
read_create, and not-accessible.
STATUS Defines the status of the object. Valid values include
current, deprecated, and obsolete.
DESCRIPTION A textual description of the semantics of the object type.
REFERENCE This field is optional and can be used to include a text
string referencing some other document.
INDEX This field is optional and is only used when the object is
part of a conceptual row of objects.
DEFVAL This field is optional and is only used when the object
should have a default value.
group The RFC 1213-defined group to which the object belongs.
# The object’s position within the RFC 1213-defined group.
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