| Description | Whether or not this group mapping is active, and may
therefore be used for obtaining RP or mode information. A
group mapping is always inactive if another mapping with a
higher precedence (that is, a lower value of
pimSmGroupMappingPrecedence) covers the whole group prefix of
this mapping. Otherwise, a group mapping is always active
unless there is at least one other mapping with the same
precedence and the same group prefix as this mapping. In
this case, one or much such mappings are active; if more
than one, the PIM hash function is applied to the subset of
active mappings to select one to use for an individual group
within the prefix. |