Crystal Vision
VisionWeb
Management information base (MIB)
As is normal for an SNMP manager system, each of the remotely-controllable boards, frames
and PSUs that are to be monitored have an associated MIB. Each MIB is a collection of object
identifiers that identify all variables that can be read via SNMP and these MIBs are available
from Crystal Vision. Use a MIB Browser to view all status and control possibilities.
Object Identifiers (OID)
For each variable to be monitored there is an object identifier or OID which can be distinguished
from any other OID within the MIB tree by a unique number sequence coded within the MIB. As
an example, from the FrameMon MIB (see tree below), the front panel status variable
isTempOK
is accessed by the OID
1.3.6.1.4.28681.1.2.1.150.1.4
. The OID will then be
accompanied by a value to indicate its status, in this case, 1= NO, 2= YES. Any status change
will cause the transmitting of a trap to the SNMP manager.
The following grab from a MIB Browser shows the FrameMon MIB tree with its identifying
number sequences:
Partial
tree of FrameMon MIB showing identifiers
Indigo 1 User Manual R1.14
38
27 February 2020
