• Author : Phil Whineray

 
 

Single Event Upset (SEU) handling on 7280/7500 Series

Description All electronic devices are subject to interference from cosmic radiation. Arista products use a combination of hardware and software to automatically detect and correct the results of this interference. For instance, many chip memories contain parity or Error Correcting Code (ECC) bits.   An SEU is a random, uncontrollable event, and cannot be stopped. However, continuous SEUs on a particular device may indicate a hardware or software fault, and Arista Support will help in making that determination. Platform Compatibility DCS-7020R DCS-7280R DCS-7280R2 DCS-7280R3 DCS-7500R DCS-7500R2 DCS-7500R3 DCS-7800R3 Configuration No configuration is required to enable SEU handling.   To change...
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Health monitoring of free buffer counts

Description In rare circumstances, a Single Event Upset may cause an underflow in the free list of buffers of a switch chip. This can cause the chip to stop forwarding packets. Recovery from this state typically requires the affected chip to be reset. This new feature allows customers to take user-defined actions when the count of buffers in use exceeds the buffers configured in the system, with a default being to log to /var/log/messages. Platform compatibility DCS-7020R DCS-7280R DCS-7280R2 DCS-7280R3 DCS-7500R DCS-7500R2 DCS-7500R3 Configuration The HealthMonitorBuffersHandler has been added as a built-in event-handler. No configuration is required to set it...
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