|  | Class | Description | 
|---|
|  | Counter | A tagged type representing an unsigned 32-bit integer that starts at 0, 
            can only increase in value, and wraps back to 0 when it exceeds its maximum value. | 
|  | Counter64 | A tagged type representing an unsigned 64-bit integer that starts at 0, can only increase in value, 
            and wraps back to 0 when it exceeds its maximum value. | 
|  | Empty | A tagged type representing a place-holder when no value is desired. | 
|  | EndOfMibView | A tagged type representing that the end of the agent's MIB view has been reached. | 
|  | Gauge | A tagged type representing an unsigned 32-bit integer that can increase or decrease in value, 
            but does not wrap to 0 if the maximum value is exceeded. Can be used interchangeably as an Unsigned32 tag type. | 
|  | Id | A tagged type representing a Dart.Snmp.MibNode (OID representing a MIB node) or instance (IID) in ASN.1 notation. '0.0' is the minimum value that may be encoded. | 
|  | Integer | A tagged type representing a signed 32-bit value. | 
|  | IpAddress | A tagged type representing an IP address. | 
|  | NoSuchInstance | A tagged type representing that the agent does not manage an instance of the IID specified by the variable. | 
|  | NoSuchObject | A tagged type representing that the agent has no knowledge of the OID specified by the variable. | 
|  | Nsap | An NSAP tagged type. | 
|  | OctetString | A tagged type supporting the capability to pass byte arrays or strings. | 
|  | Opaque | A tagged type supporting the capability to pass arbitrary binary data or structures. | 
|  | TimeTicks | A tagged type representing an unsigned 32-bit integer that counts the time in hundredths of a second 
            since some reference epoch. | 
|  | UInteger | A tagged type representing an unsigned 32-bit integer. Provided for backwards compatibility with RFC 1442. Not normally used. For a Syntax of Unsigned32 Gauge should be used. | 
|  | UIntegerBase | Base class for unsigned 32-bit integer classes. | 
|  | UIntegerBaseDisplayHint | Base class for unsigned 32-bit integer classes that support display-hint. |