RME 4.0.6 Inventory change filtering

Question

Hello
My question is about the Inventory change filtering in RME 4.0.6 under LMS 2.6
I get hundreds of records like :
Port Identity: PortID = 1024
Attribute
Type of Change
Time Change Detected
Previous Value
Current Value
Port Serial Number
New
2010-03-31 03:04:15.69
Manufacturer Name
New
2010-03-31 03:04:15.69
or
IfEntry Identity: IfEntryID = 1
Attribute
Type of Change
Time Change Detected
Previous Value
Current Value
Last Changed
Changed
2010-03-31 03:04:28.96
2009-06-19 13:32:19.783
2009-06-19 13:32:24.043
or
Port Identity: PortID = 1058
Attribute
Type of Change
Time Change Detected
Previous Value
Current Value
Port Serial Number
New
2010-03-31 03:30:59.24
H11F907
Manufacturer Name
New
2010-03-31 03:30:59.24
What is the meaning, and where does that changes come from and are they useful, cause no changes were performed ?
I guess this is not really significant, and I tried to filter them wtih the inventory change filter, which was unsuccessfull. Could you advise how I can filter them ?
Thanks in advance

Answer 1

I'm not sure about why the first value changed.  My guess is that a port was added to this device.  To filter this, check the boxes next to:
Port:Port Serial Number
Port:Manufacturer Name
The second one is quite common.  Any time an interface changes state, its ifLastChange time will change.  This may not be useful, especially on switch ports.  To filter this one out, check the box next to:
Interface:Last Change
The last entry looks to be another added port.  Again, you would filter out the elements I listed above.
All that said, seeing things like serial number an manufacturer name change might be useful.  You should think twice before filtering those.  Filtering out Last Change for interfaces, though, is probably a safe thing to do.