If the CPU icon in the Dashboard is not in green, some CPUs are running at abnormally high levels. This is normally due to unbalanced traffic (concentrated in a few subscriber IPs) or to too much traffic being proceeded 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 CPU levels in Statistics->System->CPU.

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

• Orange if some CPU cores are at high load (above 80% usage).  
• Red if some CPU cores are at very high load(above 90% 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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