This article provides a description of interface error counters.
- All FortiGate units.
- The output of the diagnose command may vary depending on the interface driver
Steps or Commands
The counters and their meaning describe what can be seen when using the CLI command:
# diag hardware deviceinfo nic interface.
|Rx_Errors = rx error count||Bad frame was marked as error by PHY.|
|Rx_CRC_Errors + Rx_Length_Errors + Rx_Align_Errors||Valid in 10/100M mode.|
||Frame CRC errors can be caused by a number of factors. Typically, they are caused by either faulty cabling, or as the result of a collision|
|Rx_Dropped||Running out of buffer space. A newer error is rx_no_buffer_count.|
Equals Rx_FIFO_Errors + CEXTERR (Carrier Extension Error Count). Only valid in 1000M mode, which is marked by PHY.
|Tx_Errors=Tx_Aborted_Errors||ECOL, Excessive Collisions Count. Valid in half-duplex mode.|
|Tx_Window_Errors||LATECOL, Late Collisions Count. Late collisions are collisions that occur after 64-byte time into the transmission of the packet while working in 10-100 Mb/s data rate, and 512 byte time into the transmission of the packet while working in the 1000 Mb/s data rate. This register only increments if transmits are enabled and the device is in half-duplex mode.|
|Rx_Dropped||See RX error.|
|Collisions||Total number of collisions experienced by the transmitter. Vaild in half-duplex mode.|
|Rx_CRC_Errors||Frame CRC errors can be caused by a number of factors. Typically, they are caused by either faulty cabling, or as the result of a collision|
|Rx_Frame_Errors||Same as Rx_Align_Errors. This error is only valid in 10/100M mode.|
|Rx_FIFO_Errors||Same as Rx_Missed_Errors; missed packet count.|
|Tx_Aborted_Errors||ECOL - Excessive Collisions Count. Only valid in half-duplex mode.|
|Tx_Carrier_Errors||The PHY should assert the internal carrier sense signal during every transmission. Failure to do so may indicate that the link has failed, or the PHY has an incorrect link configuration. This register only increments if transmits are enabled. This register is not valid in internal SerDes1 mode (TBI mode for the 82544GC/EI), and is only valid when the Ethernet controller is operating at full duplex.|
|Rx_Length_Errors||Transmission length error.|
LATECOL - Late Collisions Count.
Counts the number of times that a successfully transmitted packet encountered a single collision. The value only increments if transmits are enabled and the Ethernet controller is in half-duplex mode.
Multiple Collision Count, counts the number of times that a transmit encountered more than one collision but less than 16. The value only increments if transmits are enabled and the Ethernet controller is in half-duplex mode.
Counts defer events. A defer event occurs when the transmitter cannot immediately send a packet due to the medium being busy either because another device is transmitting, the IPG timer has not expired, half-duplex deferral events, reception of XOFF frames, or the link is not up. This register only increments if transmits are enabled. This counter does not increment for streaming transmits that are deferred due to TX IPG.
Rx frame over size.
Rx frames too short.
|Rx_Align_Errors||This error is only valid in 10/100M mode.|
|Symbol Error Count||SYMERRS - Counts the number of symbol errors between reads. The count increases for every bad symbol received, whether or not a packet is currently being received and whether or not the link is up. this register only increments in internal SerDes mode.|
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