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Interface (“if”) Statistics - Output, Ethernet (“dot3”) Statistics

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Table 56 Interface Statistics for a Port - Input Statistic Errors Description For packet-oriented interfaces, the number of inbound packets that contained errors preventing them from being delivered to a higher-layer protocol. For character-oriented or fixed-length interfaces, the number of inbound transmission units that contained errors preventing them from being deliverable to a higher-layer protocol. Interface ("if") Statistics - Output The following table describes the interface output statistics of the selected port: Table 57 Interface Statistics for a Port - Output Statistic Description HC Octets HC UCastPkts HC BcastPkts HC MCastPkts Discards Errors The total number of octets transmitted out of the interface, including framing characters. The total number of packets that higher-level protocols requested to be transmitted, and which were not addressed to a multicast or broadcast address at this sub layer, including those that were discarded or not sent. The total number of packets that higher-level protocols requested to be transmitted, and which were addressed to a broadcast address at this sub layer, including those that were discarded or not sent. This object is a 64-bit version of ifOutBroadcastPkts The total number of packets that higher-level protocols requested to be transmitted, and which were addressed to a multicast address at this sub layer, including those that were discarded or not sent. For a MAC layer protocol, this includes both Group and Functional addresses. This object is a 64-bit version of ifOutMulticastPkts. The number of outbound packets that were chosen to be discarded even though no errors had been detected to prevent their being transmitted. One possible reason for discarding such a packet could be to free up buffer space. For packet-oriented interfaces, the number of outbound packets that could not be transmitted because of errors. For character-oriented or fixed-length interfaces, the number of outbound transmission units that could not be transmitted because of errors. Ethernet ("dot3") Statistics The following table describes the Ethernet statistics of the selected port: Table 58 Ethernet Statistics for a Port Statistic Description Align Errors FCS Errors A count of frames received on a particular interface that is not an integral number of octets in length and do not pass the Frame Check Sequence (FCS) check. The count represented by an instance of this object is incremented when the alignmentError status is returned by the MAC service to the Logical Link Control (LLC) (or other MAC user). Received frames for which multiple error conditions obtained are, according to the conventions of IEEE 802.3 Layer Management, counted exclusively according to the error status presented to the LLC. A count of frames received on a particular interface that is an integral number of octets in length but do not pass the Frame Check Sequence (FCS) check. The count represented by an instance of this object is incremented when the frameCheckError status is returned by the MAC service to the LLC (or other MAC user). Received frames for which multiple error conditions obtained are, according to the conventions of IEEE 802.3 Layer Management, counted exclusively according to the error status presented to the LLC. Viewing statistics 76

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Viewing statistics 76
Table 56
Interface Statistics for a Port - Input
Statistic
Description
Errors
For packet-oriented interfaces, the number of inbound packets that contained errors preventing
them from being delivered to a higher-layer protocol. For character-oriented or fixed-length
interfaces, the number of inbound transmission units that contained errors preventing them from
being deliverable to a higher-layer protocol.
Interface (“if”) Statistics - Output
The following table describes the interface output statistics of the selected port:
Table 57
Interface Statistics for a Port - Output
Statistic
Description
HC Octets
The total number of octets transmitted out of the interface, including framing characters.
HC UCastPkts
The total number of packets that higher-level protocols requested to be transmitted, and which
were not addressed to a multicast or broadcast address at this sub layer, including those that
were discarded or not sent.
HC BcastPkts
The total number of packets that higher-level protocols requested to be transmitted, and which
were addressed to a broadcast address at this sub layer, including those that were discarded
or not sent. This object is a 64-bit version of
ifOutBroadcastPkts
HC MCastPkts
The total number of packets that higher-level protocols requested to be transmitted, and which
were addressed to a multicast address at this sub layer, including those that were discarded or
not sent. For a MAC layer protocol, this includes both Group and Functional addresses. This
object is a 64-bit version of
ifOutMulticastPkts
.
Discards
The number of outbound packets that were chosen to be discarded even though no errors had
been detected to prevent their being transmitted. One possible reason for discarding such a
packet could be to free up buffer space.
Errors
For packet-oriented interfaces, the number of outbound packets that could not be transmitted
because of errors. For character-oriented or fixed-length interfaces, the number of outbound
transmission units that could not be transmitted because of errors.
Ethernet (“dot3”) Statistics
The following table describes the Ethernet statistics of the selected port:
Table 58
Ethernet Statistics for a Port
Statistic
Description
Align Errors
A count of frames received on a particular interface that is not an integral number of
octets in length and do not pass the Frame Check Sequence (FCS) check.
The count represented by an instance of this object is incremented when the
alignmentError
status is returned by the MAC service to the Logical Link Control
(LLC) (or other MAC user). Received frames for which multiple error conditions obtained
are, according to the conventions of IEEE 802.3 Layer Management, counted
exclusively according to the error status presented to the LLC.
FCS Errors
A count of frames received on a particular interface that is an integral number of octets
in length but do not pass the Frame Check Sequence (FCS) check.
The count represented by an instance of this object is incremented when the
frameCheckError
status is returned by the MAC service to the LLC (or other MAC
user). Received frames for which multiple error conditions obtained are, according to
the conventions of IEEE 802.3 Layer Management, counted exclusively according to the
error status presented to the LLC.