View Ethernet port diagnostics
If you select an Ethernet module, select the
Port Diagnostics
tab to view information about the Ethernet port of the module.The
Port Diagnostic
tab displays the following information about your module:
TIP:
For Device Level Ring (DLR)-capable modules, the interface counter values represent the frames sent and received by the host device. These values will be the same for all ports on the device. For modules that are not DLR-capable, the interface counter values represent the frames sent and received on each port regardless of their source or destination.
Interface Counters: Information relevant to receipt of packets on the interface
Counter Name | Description |
In Octets | Octets received on the interface |
Out Octets | Octets sent out from the interface |
In Ucast Packets | Unicast packets received on the interface |
Out Ucast Packets | Unicast packet sent out from the interface |
In NUcast Packets | Non-unicast packets received on the interface |
Out NUcast Packets | Non-unicast packets sent out from the interface |
In Discards | Inbound packets that were received on the interface but discarded |
Out Discards | Outbound packets that were sent out from the interface but were discarded |
In Errors | Inbound packets that contain errors (does not include In Discards) |
Out Errors | Outbound packets that contain errors |
In Unknown Protos | Inbound packets with unknown protocol |
TIP:
If you are viewing Ethernet port diagnostics for a device with multiple Ethernet ports, you can specify which port (Port 1, Port 2, Port Device) you want to view diagnostics for in the Current Port drop down.
Media Counters: Information specific to the Ethernet media you are using
Counter Name | Description |
Alignment Errors | Frames received that are not an integral number of octets in length |
FCS Errors | Frames received that do not pass the FCS (Frame Check Sequence) check |
Single Collisions | Successfully transmitted frames which experienced exactly one collision |
Multiple Collisions | Successfully transmitted frames which experienced more than one collision |
SQE Test Errors | Number of times SQE test error message is generated |
Deferred Transmission | Frames for which first transmission attempt is delayed because the medium is busy |
Late Collisions | Number of times a collision is detected later than 512 bit-times into the transmission of a packet |
Excessive Collisions | Frames for which transmission fails due to excessive collisions |
MAC Transmit Error | Frames for which transmission fails due to an internal MAC sublayer transmit error |
Carrier Sense Error | Times that the carrier sense condition was lost or never asserted when attempting to transmit a frame |
Frame Too Long | Frames received that exceed the maximum permitted frame size |
MAC Receive Errors | Frames that were not received on an interface due to an internal MAC sublayer receive error |
Provide Feedback