All,
For folks who are interested in getting the patch for this issue (False System is up/down alerts being logged in OME Alerts console), please call tech support: 800-945-3355. (Removed by moderator) Tech support will provide the patch and manual instructions to apply it.
After applying the patch if you still see the alerts logged, please follow these steps:
Check the device for which the alert is logged and get the device name/IPAddress.
From OME system (using OS command prompt) run this command for few mins:
ping -w 400 -n 1 IPaddress/Hostname -t
If any of the response packet (reply) exceeds 400ms (check the value under "time" field for each packet), then increase the ICMP timeout in Discovery wizard for that range. The time out should be set to max. time + 200ms taken by any ping response packet.
If any of the response packet (reply) timed out (Request timed out), then increase the ICMP retries in Discovery wizard for that range. The retry should be set to number of continous timed out response+1 .
Recommended settings (could still vary based on network bandwidth):
LAN environment: Increase ICMP timeout in Discovery wizard for all the ranges to 1 sec and 4 retries.
WAN environment: Increase ICMP timeout in Discovery wizard for all the ranges to 5 secs and 6 retries.
NOTE: Increasing ICMP timeout and retries will impact discovery performance and depends on:
If a discovery range has lot of devices that are unreachable on the network
If the network bandwidth is slow and takes multiple retries to ping a device
Thanks,
Raj Shresta