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Port Configuration
101
NXA-ENET24 - Software Management Guide
Port Statistics (Cont.)
Interface Statistics (Cont.)
•Transmit Octets: The total number of octets transmitted out of the interface, including framing
characters.
• Transmit Unicast
Packets:
The total number of packets that higher-level protocols requested be transmitted
to a subnetwork-unicast address, including those that were discarded or not
sent.
• Transmit Multicast
Packets:
The total number of packets that higher-level protocols requested be transmit-
ted, and which were addressed to a multicast address at this sub-layer, including
those that were discarded or not sent.
• Transmit Broadcast
Packets:
The total number of packets that higher-level protocols requested be transmit-
ted, and which were addressed to a broadcast address at this sub-layer, includ-
ing those that were discarded or not sent.
• Transmit Discarded
Packets:
The number of outbound packets which were chosen to be discarded even
though no errors had been detected to prevent their being transmitted. One pos-
sible reason for discarding such a packet could be to free up buffer space.
• Transmit Errors: The number of outbound packets that could not be transmitted because of
errors.
Etherlike Statistics
• Alignment Errors: The number of alignment errors (missynchronized data packets).
• Late Collisions: The number of times that a collision is detected later than 512 bit-times into the
transmission of a packet.
• FCS Errors: A count of frames received on a particular interface that are an integral number
of octets in length but do not pass the FCS check. This count does not include
frames received with frame-too-long or frame-too-short error.
• Excessive Collisions: A count of frames for which transmission on a particular interface fails due to
excessive collisions. This counter does not increment when the interface is oper-
ating in full-duplex mode.
• Single Collision
Frames:
The number of successfully transmitted frames for which transmission is inhib-
ited by exactly one collision.
• Internal MAC
Transmit Errors:
A count of frames for which transmission on a particular interface fails due to an
internal MAC sublayer transmit error.
• Multiple Collision
Frames:
A count of successfully transmitted frames for which transmission is inhibited by
more than one collision.
• Carrier Sense Errors: The number of times that the carrier sense condition was lost or never asserted
when attempting to transmit a frame.
• SQE Test Errors: A count of times that the SQE TEST ERROR message is generated by the PLS
sublayer for a particular interface.
• Frames Too Long: A count of frames received on a particular interface that exceed the maximum
permitted frame size.
• Deferred Transmissions: A count of frames for which the first transmission attempt on a particular inter-
face is delayed because the medium was busy.
• Internal MAC
Receive Errors:
A count of frames for which reception on a particular interface fails due to an
internal MAC sublayer receive error.
RMON Statistics
• Drop Events: The total number of events in which packets were dropped due to lack of
resources.
• Jabbers: The total number of frames received that were longer than 1518 octets (exclud-
ing framing bits, but including FCS octets), and had either an FCS or alignment
error.
• Received Bytes: Total number of bytes of data received on the network. This statistic can be used
as a reasonable indication of Ethernet utilization.