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Updated: July 4, 2016
After upgrading from a previous version of NTA to NTA 4.2.0, you will find that any Fortigate F200D or F300D devices no longer show Netflow Last Received at a current date/time.
Investigating the NTA.BusinessLayer.log file reveals the a large number of instances of the following error:
ERROR Solarwinds.Netflow.Processing.Workflow.PacketProcessingWorkflow - error processing packet System.ArgumentOutOfRangeException: Specified argument was out of the range of valid values.
Parameter name: destoffset
at Solarwinds.Netflow.Processing.Core.PacketParsers.FlowBuffer.CopyTo(Byte[] dest, Int32 SrcOffset, Int32 length, Int32 destoffset, Int32 variableLenghtsFields)
at Solarwinds.Netflow.Processing.Core.PacketParsers.Packets.V9Template.GetField(FlowBuffer buffer, Int32 fieldId)
at Solarwinds.Netflow.Processing.Core.PacketParsers.Packets.V9FlowPDU.get_NbarApplicationId()
at Solarwinds.Netflow.Processing.Core.PacketParsers.Packets. V9FlowPDU.get_ ApplicationOption()
at Solarwinds.Netflow.Processing.Fastbit.ApplicationResolverFb.ResolveAdvancedApplication(IFlowPDUForAdvancedAppResolve flow)
at Solarwinds.Netflow.Processing.PacketProcessor.ProcessFlowPDU(IFlow packet, Inode node, IFlowPDU PDU, IPAddress nodeIPAddress, DateTime currentTime, List`1 interfaceIds, List`1 rows, Int32& unmonitoredPortCount, Int32& unmonitoredPortDroppedCount, Int32& monitoredPortCount, Boolean& hasAARData)
at SolarWinds.Netflow.Processing.Core.PacketProcessing.PacketProcessor.GetDetailRowsFromPacket(IFlowPacket packet, INode node)
at Solarwinds.Netflow.Processing.NetflowPacketProcessor.ProcessPacket_Internal(IFlowPacket packet, INode node)
at Solarwinds.Netflow.Processing.Workflow.PacketProcessingWorkflow.ProcessPacket(Object state)
This is a known, documented bug to be fixed in a future release.