How To Fix RT251 - LAN -- Number of collisions

RT251 - Overview

• Message type: E = Error

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

• Message number: 251

• Message text: LAN -- Number of collisions

What causes this issue?

A collision in a LAN occurs when two stations both try to transport a
packet on the same channel at the same time, which leads to the
destruction of both data packets - they must therefore be sent again.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

INCLUDE BC_MONI_LAN OBJECT DOKU ID TX LANGUAGE EN
In the case of a Token Ring Architecture, <LS>Collisions per Second</>
is missing.
For more 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 RT251 - LAN -- Number of collisions ?

  The SAP error message RT251, which indicates "LAN -- Number of collisions," typically relates to network issues, particularly in environments where SAP systems are communicating over a Local Area Network (LAN). This error suggests that there are multiple collisions occurring on the network, which can lead to performance degradation and connectivity issues.
  Causes:
  
  Network Congestion: High traffic on the network can lead to packet collisions, especially in shared network environments.
  Faulty Network Hardware: Malfunctioning network devices (like switches, routers, or network interface cards) can cause increased collisions.
  Improper Network Configuration: Misconfigured network settings, such as duplex mismatches (half-duplex vs. full-duplex), can lead to collisions.
  Cable Issues: Damaged or low-quality network cables can also contribute to increased collision rates.
  Excessive Broadcast Traffic: Too many broadcast packets can saturate the network, leading to collisions.
  
  Solutions:
  
  Network Analysis: Use network monitoring tools to analyze traffic and identify congestion points or faulty devices.
  Upgrade Network Hardware: If the network devices are outdated or