viewMask

The bit mask which, in combination with the
corresponding instance of viewSubtree, defines a
family of view subtrees.
              
Each bit of this bit mask corresponds to a sub-
identifier of viewSubtree, with the most
significant bit of the i-th octet of this octet
string value (extended if necessary, see below)
corresponding to the (8*i - 7)-th sub-identifier,
and the least significant bit of the i-th octet of
this octet string corresponding to the (8*i)-th
sub-identifier, where i is in the range 1 through
16.
              
Each bit of this bit mask specifies whether or not
the corresponding sub-identifiers must match when
determining if an OBJECT IDENTIFIER is in this
family of view subtrees; a '1' indicates that an
exact match must occur; a '0' indicates 'wild
card', i.e., any sub-identifier value matches.
              
Thus, the OBJECT IDENTIFIER X of an object
instance is contained in a family of view subtrees
if the following criteria are met:
              
     for each sub-identifier of the value of
     viewSubtree, either:
              
          the i-th bit of viewMask is 0, or
              
          the i-th sub-identifier of X is equal to
          the i-th sub-identifier of the value of
          viewSubtree.
              
If the value of this bit mask is M bits long and
there are more than M sub-identifiers in the
corresponding instance of viewSubtree, then the
bit mask is extended with 1's to be the required
length.
              
Note that when the value of this object is the
zero-length string, this extension rule results in
a mask of all-1's being used (i.e., no 'wild
card'), and the family of view subtrees is the one
view subtree uniquely identified by the
corresponding instance of viewSubtree.

MIB

SNMPv2-PARTY-MIB

OID

.1.3.6.1.6.3.3.2.4.1.1.3

Type

column

Access

readwrite

Status

current

Parent

viewEntry

Table

viewTable

Siblings

5