Lantronix SISPM1040-xxxx-L3 Web User Guide
33856 Rev. A https://www.lantronix.com/ 51
Receive and Transmit Size Counters: The number of received and transmitted (good and bad) packets split into
categories based on their respective frame sizes.
Receive and Transmit Queue Counters: The number of received and transmitted packets per input and output
queue.
Receive Error Counters:
Rx Drops: The number of frames dropped due to lack of receive buffers or egress congestion.
Rx CRC/Alignment: The number of frames received with CRC or alignment errors.
Rx Undersize: The number of short 1 frames received with valid CRC.
Rx Oversize: The number of long 2 frames received with valid CRC.
Rx Fragments: The number of short 1 frames received with invalid CRC.
Rx Jabber: The number of long 2 frames received with invalid CRC.
Rx Filtered: The number of received frames filtered by the forwarding process.
Note 1: Short frames are frames that are smaller than 64 bytes.
Note 2: Long frames are frames that are longer than the configured maximum frame length for this port.
Transmit Error Counters
Tx Drops: The number of frames dropped due to output buffer congestion.
Tx Late/Exc. Coll.: The number of frames dropped due to excessive or late collisions.
Receive MM Counters: Rx MM Fragments: A count of received MAC frame fragments.
Rx MM Assembly Ok: A count of MAC frames that were successfully reassembled and delivered to MAC.
Rx MM Assembly Errors: A count of MAC frames with reassembly errors. The counter is incremented when the
ASSEMBLY_ERROR state of the Receive Processing State Diagram is entered.
Rx MM SMD Errors: A count of received MAC frames / MAC frame fragments rejected due to unknown SMD
value or arriving with an SMD-C when no frame is in progress. The counter is incremented each time the
BAD_FRAG state of the Receive Processing State Diagram is entered.
Transmit MM Counters
Tx MM Fragments: A count of transmitted MAC frame fragments.
Tx MM Hold: A count of times MM_CTL.request(HOLD) primitive assertion caused preemption of a preemptable
MAC frame.
Buttons
Auto-refresh: Check this box to refresh the page automatically every 3 seconds.
Refresh: Click to refresh the page immediately.
Clear: Clears the counters for the selected port.
: The port select box determines which port’s information is displayed.
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