If the Memory icon in the Dashboard is not in green, some processes are running out of memory. This is normally due to unbalanced traffic (traffic concentrated in a few subscriber IPs) or to too much traffic being processed by the BQN server.

The BQN has internal mechanisms to mitigate this situation, trying to prevent traffic losses by reducing the amount of optimized traffic.

The throughput level can be verified in Statistics->Throughput->Overview and the Memory levels in Statistics->System->Memory.

There are two alarm types, depending on the memory load levels:

• Orange if some processes reach high usage (above 90% usage).  
• Red if some processes reach very high usage(above 95% usage).  

Follow these steps:

• If you are using NAT between the BQN and the end subscribers, increment the number of IPs used by the NAT, so the BQN can distribute the traffic among more addresses. You can see how traffic is distributed among IPs in Statistics->Subscribers->Top By Time.
• Enable the bypass path, or, if not possible, reduce the amount of traffic being routed through the BQN.
• Disable TCP optimization in Configuration->TCPO Settings.
• A hardware upgrade may be needed. Contact Bequant support.

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