How To Fix RT603 - &1 &3 > &2 &3 (15 Min.) No. of outbound packets in LAN exceeds threshold

SAP Error Message - Details

• Message type: E = Error

• Message class: RT - Monitoring infrastructure MSG and alert texts

• Message number: 603

• Message text: &1 &3 > &2 &3 (15 Min.) No. of outbound packets in LAN exceeds threshold

What causes this issue?

The threshold value for outgoing packets per second has been exceeded.
Check if the threshold value is too low and if it is merely a temporary
problem. If this is not the case, too high a data stream is running
through this server.

How to fix this error?

Check the interface and your LAN. You may have to change the topology
in order to avoid local overload situations.
INCLUDE BC_MONI_LAN OBJECT DOKU ID TX LANGUAGE EN
For more detailed information about the LAN, select the node and choose
<LS>Start Analysis Method</>.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RT603 - &1 &3 > &2 &3 (15 Min.) No. of outbound packets in LAN exceeds threshold ?

  The SAP error message RT603 indicates that the number of outbound packets in the LAN has exceeded a predefined threshold. This can lead to performance issues or network congestion, as the system is trying to send more data than the network can handle efficiently.
  Cause:
  
  
  High Network Traffic: The primary cause of this error is high network traffic, which can occur due to various reasons such as:
  
  A large number of users accessing the system simultaneously.
  Background jobs or batch processes generating excessive outbound packets.
  Network configuration issues or limitations.
  Misconfigured SAP settings that lead to excessive data transmission.
  
  
  
  Threshold Settings: The threshold for outbound packets may be set too low for the current workload, leading to frequent violations of this limit.
  
  
  Solution:
  
  
  Analyze Network Traffic: Use network monitoring tools to analyze the traffic and identify the source of the high packet generation. Look for:
  
  Background jobs that may be sending too much data.
  User activities that may be causing excessive outbound packets.
  
  
  
  Adjust Threshold Settings: If the current threshold is too low for your environment, consider increasing it. This can usually be done in the SAP system settings or configuration files. Consult with your SAP Basis team or network administrator for guidance.
  
  
  Optimize Background Jobs: Review and optimize any background jobs or batch processes that may be generating excessive outbound packets. This may involve:
  
  Scheduling jobs during off-peak hours.
  Reducing the frequency of certain jobs.
  Splitting large jobs into smaller, more manageable ones.
  
  
  
  Network Configuration: Ensure that the network is properly configured to handle the expected load. This may involve:
  
  Upgrading network hardware (e.g., switches, routers).
  Increasing bandwidth if necessary.
  Implementing Quality of Service (QoS) settings to prioritize SAP traffic.
  
  
  
  SAP Notes and Support: Check for any relevant SAP Notes that may address this issue. SAP frequently releases updates and patches that can resolve known issues.
  
  
  Consult SAP Support: If the problem persists after taking the above steps, consider reaching out to SAP Support for further assistance. They can provide more specific guidance based on your system configuration and usage patterns.
  
  
  Related Information:
  
  Monitoring Tools: Use tools like SAP Solution Manager, SAP EarlyWatch Alert, or third-party network monitoring tools to keep an eye on network performance and identify potential bottlenecks.
  Documentation: Refer to SAP documentation for specific configuration settings related to network performance and packet handling.
  Performance Tuning: Regularly review and tune your SAP system for performance, including database optimization, application server settings, and network configurations.
  
  By addressing the underlying causes and optimizing your network and SAP settings, you can mitigate the occurrence of the RT603 error and improve overall system performance.