The statistics in this section are for the following controllers. They can be onboard or add-on NICs.
The following table describes the statistics in the RECEIVE section of the ifstat command output when you use the command on an Ethernet interface listed at the beginning of this section
| Statistic | Meaning |
|---|---|
| Frames/second | Rate of received frames per second. |
| Bytes/second | Rate of received bytes per second. |
| Errors/minute | Rate of errors (which led to frames being lost) per minute. |
| Discards/minute | Rate per minute of packets discarded due to unavailable resources. |
| Total frames | Total frames that are received on the interface. |
| Total bytes | Total bytes that are received on the interface. |
| Total errors | Total errors that occur on the interface. |
| Total discards | Total number of packets that were discarded even though no errors were detected. This number is a sum of the "No buffers", "Bus overruns", and "Queue overflows" statistics. |
| Multi/broadcast | Total number of multicast or broadcast packets received. |
| Alignment errors | Number of frames that are both misaligned and contain CRC errors. |
| Non-primary u/c | Number of Ethernet frames received for the partner's MAC address after a failover in a cluster configuration. |
| Tag drop | Number of tagged frames dropped on an interface that is not configured to support VLAN tagging. |
| Vlan tag drop | Number of tagged frames dropped that do not match the VLAN tags configured on the interface. |
| Vlan untag drop | Number of untagged frames dropped on an interface that is configured to be part of a VLAN. |
| CRC errors | Number of packets received with bad CRC. |
| Bad length | Total number of received packets with a bad length. These are frames counted as undersize, fragment, oversize, or jabber. |
| Runt frames | Number of received frames that were less than the minimum size (64 bytes) and had a valid CRC. |
| Fragment | Number of received frames that were less than the minimum size and had a bad CRC. |
| Long frames | Number of received frames that were greater than the maximum size and had a valid CRC. |
| Jabber | Number of received frames that were greater than the maximum size and had a bad CRC. |
| Bus overruns | Number of times the adapter's receive FIFO overflowed and a packet was dropped. This occurs when the bus is very busy and the adapter cannot transfer data into host memory. This might also occur when your storage system CPU is very busy and cannot process the received packets fast enough. |
| Queue overflows | Number of frames dropped on receive due to the driver receive queue overflowing. |
| No buffer | Number of times the driver could not allocate a buffer and a packet was dropped. This might happen when your storage system is very busy. If the count increases continually, it might indicate that a software component is not returning buffers. |
| Xon | Number of XON frames received when receive or full flow control is enabled. |
| Xoff | Number of XOFF frames received when receive or full flow control is enabled. |
| Jumbo | Number of good packets received that were larger than the standard Ethernet packet size when jumbo frames are enabled. |
| Reset | Number of times the driver reset the NIC because the NIC was in a bad state. |
| Reset1 | Number of times the driver reset the NIC because the NIC was in a bad state. |
| Reset2 | Number of times the driver reset the NIC because the NIC was in a bad state. |
The following table describes the statistics in the TRANSMIT section of the ifstat command output when you use the command on a Gigabit Ethernet interface listed at the beginning of this section .
| Statistic | Meaning |
|---|---|
| Frames/second | Rate of transmitted frames per second. |
| Bytes/second | Rate of transmitted bytes per second. |
| Errors/minute | Rate of errors (which led to frames being lost) per minute. |
| Discards/minute | Rate per minute of packets discarded due to unavailable resources. |
| Total frames | Total frames that are transmitted on the interface. |
| Total bytes | Total bytes that are transmitted on the interface. |
| Total errors | Total errors that occur on the interface. |
| Total discards | Total number of packets that were discarded even though no errors were detected. This number is a sum of the "No buffers" and "Queue overflows" statistics. |
| Multi/broadcast | Total number of multicast or broadcast packets transmitted. |
| No buffers | Number of times the driver failed to allocate a buffer for the transmit packet. |
| Queue overflow | Number of outgoing packets dropped because the driver's queue was full. It might indicate a system problem. |
| Max collisions | Number of frames that were not transmitted because they encountered the maximum number of allowed collisions. Only valid in half-duplex mode. |
| Single collision | Number of frames that encountered exactly one collision. Only valid in half-duplex mode. |
| Multi collisions | Number of frames that encountered more than one collision, but less than the maximum allowed. Only valid in half-duplex mode. |
| Late collisions | Number of collisions that occurred outside the collision window. Only valid in half-duplex mode. |
| Xon | Number of XON frames transmitted when send or full flow control is enabled. |
| Xoff | Number of XOFF frames transmitted when send or full flow control is enabled. |
| Timeout | Number of times the adapter's transmitter hung and the adapter had to be reset. This can happen when the cable is pulled and the transmitter cannot transmit a packet. The adapter is reset to reclaim packet buffers. |
| Jumbo | Number of packets transmitted that were larger than the standard |
The following table describes the statistics in the LINK INFO section of the ifstat command output when you use the command on a Gigabit Ethernet interface listed at the beginning of this section.