Reference Guide

N8406-022A 1Gb Intelligent L2 Switch Browser-based Interface Reference Guide 55
Table 42 Ethernet Statistics for a Port
Statistic
Description
Excess Collisions
A count of frames for which transmission on a particular interface fails due to
excessive collisions.
Internal MACErrors
A count of frames for which transmission on a particular interface fails due to an
internal MAC sub layer transmit error. A frame is only counted by an instance of this
object if it is not counted by the corresponding instance of the
dot3StatsLateCollisions object, the
dot3StatsExcessiveCollisions object, or the dot3Stats-
CarrierSenseErrors object.
The precise meaning of the count represented by an instance of this object is
implementation-specific. In particular, an instance of this object may represent a
count of transmission errors on a particular interface that are not otherwise counted.
Frame Too Longs
A count of frames received on a particular interface that exceeds the maximum
permitted frame size.
The count represented by an instance of this object is incremented when the
frameTooLong 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.
Mac Receive Errors
A count of frames for which reception on a particular interface fails due to an internal
MAC sub layer receive error. A frame is only counted by an instance of this object if
it is not counted by the corresponding instance of the
dot3StatsFrameTooLongs object, the dot3Stats-AlignmentErrors
object, or the dot3StatsFCSErrors object. The precise meaning of the count
represented by an instance of this object is implementation-specific. In particular, an
instance of this object may represent a count of received errors on a particular
interface that are not otherwise counted.
GEA IP Statistics
The following table describes the GEA statistics for the selected port:
Table 43 GEA IP statistics of a port
Statistic
Description
InReceives
The total number of input datagrams received from interfaces, including those received in
error.
InHeaderError
The number of input datagrams discarded because the IP address in their IP header's
destination field was not a valid address to be received at this entity (the switch).
InDiscards
The number of input IP datagrams for which no problems were encountered to prevent
their continued processing, but which were discarded (for example, for lack of buffer
space). Note that this counter does not include any datagrams discarded while awaiting
re-assembly.