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A/V Edge - 00 - UDP Counters\- 006 - Allocate Requests Exceeding Port Limit/sec\_Total

A_V_Edge___00___UDP_Counters___006___Allocate_Requests_Exceeding_Port_Limit_sec__Total___MR (Rule)

The per-second rate of allocate requests over UDP that exceeded the port limit.

Knowledge Base article:

Summary

The per-second rate of allocate requests over UDP that exceeded the port limit.

Causes

This error occurs when there is an unexpectedly high rate of requests over UDP for ports associated with the same user ID. This could be an indication of an attempt to misuse the A/V Edge Server.

Resolutions

Check that the profile of network traffic to the A/V Edge Server is in line with expected usage. A network level trace can be used to determine if there is unusual amount of traffic originating from a single source. If the situation persists then enable tracing to identify the originator of messages requesting more than the permitted number of ports to allow further troubleshooting of the cause.

Element properties:

TargetMicrosoft_Office_Communications_Server_2007_R2_A_V_Edge_Server
CategoryPerformanceCollection
EnabledTrue
Instance NameA/V Edge - 00 - UDP Counters
Counter Name- 006 - Allocate Requests Exceeding Port Limit/sec
Frequency900
Alert GenerateFalse
RemotableTrue

Member Modules:

ID Module Type TypeId RunAs 
CollectPerfCounter DataSource System.Performance.OptimizedDataProvider Default
WriteToDB WriteAction Microsoft.SystemCenter.CollectPerformanceData Default
WriteToDW WriteAction Microsoft.SystemCenter.DataWarehouse.PublishPerformanceData Default

Source Code:

<Rule ID="A_V_Edge___00___UDP_Counters___006___Allocate_Requests_Exceeding_Port_Limit_sec__Total___MR" Enabled="true" Target="Microsoft_Office_Communications_Server_2007_R2_A_V_Edge_Server" ConfirmDelivery="false" Remotable="true" Priority="Normal" DiscardLevel="100">

  <Category>PerformanceCollection</Category>

  <DataSources>

    <DataSource ID="CollectPerfCounter" TypeID="SCPerformance!System.Performance.OptimizedDataProvider">

      <ComputerName>$Target/Host/Property[Type="SCWindowsLibrary!Microsoft.Windows.Computer"]/NetworkName$</ComputerName>

      <CounterName>- 006 - Allocate Requests Exceeding Port Limit/sec</CounterName>

      <ObjectName>A/V Edge - 00 - UDP Counters</ObjectName>

      <InstanceName>_Total</InstanceName>

      <AllInstances>false</AllInstances>

      <Frequency>900</Frequency>

      <Tolerance>5</Tolerance>

      <ToleranceType>Absolute</ToleranceType>

      <MaximumSampleSeparation>4</MaximumSampleSeparation>

    </DataSource>

  </DataSources>

  <WriteActions>

    <WriteAction ID="WriteToDB" TypeID="SCSystemLibrary!Microsoft.SystemCenter.CollectPerformanceData"/>

    <WriteAction ID="WriteToDW" TypeID="SCDataWarehouseLibrary!Microsoft.SystemCenter.DataWarehouse.PublishPerformanceData"/>

  </WriteActions>

</Rule>