LMS4 + DFM timing for SNMP3

Question

Hello,
Have the problem (LMS4 + newest CS and DFM device package) that I get just 10% of DCR devices discovered in DFM and just a little bit increased with max. SNMP timeout.
All DFM Unknown devices are SNMP timeouted in DFM, but could be discovered in CM and RME inventory.
Because SNMPv3-AuthPriv could be much slower than v2 for a lot of devices, I wanted to try with a better timing for it.
But in DFM-Admin GUI I cant lower retries count not less than 3 and cant increase timeout more than 30s.
What can I do to get all devices managed in DFM as well?
Steffen

Answer 1

I doubt the problem is really an SNMP timeout.  If other features in LMS can manage the devices, make sure that the devices can be pinged from the LMS server.  The fault management piece of LMS is the only feature that requires devices to be ICMP reachable.  If the managed IPs of the devices cannot be pinged, DFM will not be able to manage them.
Also, make sure the SNMP engineIDs are unique across all devices.  Run the "show snmp engine" command on all devices, and confirm the value is unique.  If not, you will need to set the engineID to a unique value, then reboot the device.  Unmanage the device from fault management, then re-manage it.