Packets Dropped/sec over TCP Monitor

  • ID:  Microsoft.LS.2015.Monitoring.UnitMonitor.ThresholdPC.AVEdge.TCP_PACKETS_DROPPED_SEC
  • Description:  Packets Dropped/sec over TCP
  • Target:  Audio Video Edge Component
  • Enabled:  Yes

Operational States

Name State Description
Over Threshold state for Monitor 'Packets Dropped/sec over TCP' Error  
Under Threshold state for Monitor 'Packets Dropped/sec over TCP' Success  
Under Threshold Over Threshold state for Monitor 'Packets Dropped/sec over TCP' Warning  

Overridable Parameters

Parameter Name Default Value Description Override
Frequency 60 Frequency
Warning Threshold 300 Warning Threshold
Error Threshold 400 Error Threshold
Number of Samples 2 Number of Sample

Alert Details

Monitor State Message Priority Severity Auto Resolution
Over Threshold state for Monitor 'Packets Dropped/sec over TCP' (Error) [Skype] The per-second rate of packets over TCP dropped by the relay. Medium Critical Yes

Run As Profiles

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Default

Monitor Knowledgebase

Summary

The per-second rate of packets over TCP dropped by the relay.

Causes

This error occurs when an unexpectedly high rate of TCP packets is received at the A/V Edge Server causing some packets to be discarded. This could be the result of system overload or 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. If the traffic exceeds 250 Mbps per interface then increase the receive and transmit buffer size on the associate Network Interface Cards to three times the default values. If the cause is general system overload then increase capacity of the deployed A/V Edge Server function. 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 check the network source of sessions exceeding the bandwidth limits to allow further troubleshooting of the cause.

External References
This monitor does not contain any external references.

See Also for Lync Server 2015 Monitoring Management Pack


Downloads for Lync Server 2015 Monitoring Management Pack

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