The ifstat command output displays several statistics when you use the command for the Dual 10G Ethernet controllers.
The following table describes the statistics in the RECEIVE section of the ifstat command output:
Statistic | Definition |
---|---|
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 of packets discarded per minute due to unavailable resources. |
Total frames |
Total frames received by the interface. |
Total bytes |
Total bytes received by the interface. |
Total errors |
Total errors that occur on the interface. |
Total discards |
Total number of packets that were discarded in spite of undetected errors. 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. |
No buffers |
Number of times the driver could not allocate a buffer and a packet was dropped. This might occur when your storage system is busy. If the count increases continually, it might indicate that a software component is not returning buffers. |
Non-primary u/c |
Number of Ethernet frames received for the partner's MAC address after a failover in an HA pair. |
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. |
Alignment errors |
Number of frames that are both misaligned and contain CRC errors. |
Runt frames |
Number of received frames that were less than the minimum size (64 bytes) and had a valid CRC. |
Long frames |
Number of received frames that were greater than the maximum size and had a valid CRC. |
Code error |
Number of received packets/ frames with code errors. |
Preamble error |
Number of received packets/ frames with preamble errors. |
Frame length error |
Number of received frames with frame length errors. |
Received VLAN frames |
Number of received VLAN frames. |
The following table describes the statistics in the TRANSMIT section of the ifstat command output:
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 of packets discarded per minute due to unavailable resources. |
Total frames |
Total frames that were transmitted on the interface. |
Total bytes |
Total bytes that were transmitted on the interface. |
Total errors |
Total errors that occur on the interface. |
Total discards |
Total number of discarded packets 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 overflows |
Number of outgoing packets dropped because the driver's queue was full. It might indicate a system problem. |
Backplane error |
Number of PCI backplane errors detected. |
Padded sent |
Number of 16-60 byte frames, padded and sent. |
Too long frames |
Number of frames that were too long but were sent anyway. |
Too short frames |
Number of frames that were too short and illegal and were not sent. |
Unmatched length |
Total descriptor length that does not match transfer length. |
The following table describes the statistics in the LINK INFO section of the ifstat command output:
Statistic | Meaning |
---|---|
Current state |
Current state of the interface:
|
Up to downs |
Number of times the link is switched between the up status and the down status. |
Speed |
Speed of link negotiated or set. |
Duplex |
Duplex of the link negotiated or set. |
Flow control |
The configured flow control setting, as flow control is not autonegotiated on this interface. |