IfDirection specifies a direction of data travel on an
interface. 'inbound' traffic is operated on during reception from
the interface, while 'outbound' traffic is operated on prior to
transmission on the interface.
IndexInteger
uint32
An integer which may be used as a table index.
IndexIntegerNextFree
uint32
An integer which may be used as a new Index in a table.
The special value of 0 indicates that no more new entries can be
created in the relevant table.
When a MIB is used for configuration, an object with this SYNTAX
always contains a legal value (if non-zero) for an index that is
not currently used in the relevant table. The Command Generator
(Network Management Application) reads this variable and uses the
(non-zero) value read when creating a new row with an SNMP SET.
When the SET is performed, the Command Responder (agent) must
determine whether the value is indeed still unused; Two Network
Management Applications may attempt to create a row
(configuration entry) simultaneously and use the same value. If
it is currently unused, the SET succeeds and the Command
Responder (agent) changes the value of this object, according to
an implementation-specific algorithm. If the value is in use,
however, the SET fails. The Network Management Application must
then re-read this variable to obtain a new usable value.
An OBJECT-TYPE definition using this SYNTAX MUST specify the
relevant table for which the object is providing this
functionality.