Multicast Routing Resource Error in NPM

11/14/2018 1:35 PM

8/19/2020 8:17 PM

When accessing the Orion Web Console, the Top 10 Multicast Traffic Resource yields the following error on the NPM Summary view:

Sample Image:
 
OrionWeb.log show the following errors,

ERROR MulticastRouting - Multicast service exception:
System.OverflowException: Value was either too large or too small for an Int32.
   at System.Convert.ToInt32(Double value)
   at System.Single.System.IConvertible.ToInt32(IFormatProvider provider)
   at System.Convert.ToInt32(Object value)
   at MulticastRouting.GetMulticastTopXXTraffic(PagingStatus pagingStatus, MulticastRoutingTableTopXXConfiguration configParameters)

Network Performance Monitor

Multicast routing resource is crashing from a device that sends high values.

Run the following query in the Database Manager or SQL Server Management Studio to identify which node is causing this issue :

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SELECT n.NodeID, n.IP_Address, n.Caption, mr.InBps FROM NPM_Multicast_RoutingTable mr
JOIN NPM_Multicast_GroupNodes mg ON (mr.MulticastGroupNodeID=mg.MulticastGroupNodeID)
JOIN Nodes n ON (mg.NodeID=n.NodeID)
ORDER By mr.InBps desc

The node causing the issue should appear at the top with a high value for InBps.

Try any of the following:​

• Disable the Multicast Routing of the node (appearing with a high value for InBps) via List Resources Management and re-enable it again

• Delete and re-add the node (showing the high value for InBps) in NPM