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Home > Success Center > Network Performance Monitor (NPM) > Multicast Routing TOP 10 Resource Error

Multicast Routing TOP 10 Resource Error

Created by Harry Griffiths, last modified by MindTouch on Jun 23, 2016

Views: 1,139 Votes: 4 Revisions: 5

Overview

 

The TOP 10 Multicast Resource yields the following error on the NPM Summary view:

 

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)

Environment

NPM 11.5.2

 

Cause 

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

Resolution

Run the following query to identify which node is causing this issue :


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 with a high value for InBps at the top.

 

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