The value of tmnxVdoIfName specifies the unique administrative name
for this video interface. The name must begin with a letter and
is restricted to a maximum length of 29 characters during row creation
using the 'tmnxVdoIfRowStatus' object. The remaining 3 characters are
used internally by the agent to distinguish between user created
video interfaces and agent created video interfaces. The agent created
video interfaces have the same name as the user created
video interfaces but are appended with a suffix of '-S' or '-S2'. These
agent created video interfaces can be viewed using SNMP operations only
in MIB tables that hold video interface statistical values namely -
'tmnxVdoGrpSrcStatTable', 'tmnxVdoPIDTable', 'tmnxVdoGrpSrcVqmTable'
and 'tmnxVdoGrpSrcVqmStatTable'.