CANOGA PERKINS 9145E10G NID Software Version 1.0 - Manual (Page 78)

9145E10G NID Software User’s Manual Port Information
Layer 2 Statistics
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5.3.1 Layer 2 Counter Definitions
The following are definitions of the counters encountered on the Layer 2 Error Statistics screen
(Figure 5-13.) and Layer 2 Frame Type Statistics screens (Figure 5-14.).
5.3.1.1 Layer 2 Statistics
Frames Sent - reports the total number of frames sent from the interface since the last reset
(Raw) or the last counter reset (Current).
Frames Rcvd - reports the total number of valid frames received on the interface since the last
reset (Raw) or the last counter reset (Current).
Bytes Sent - reports the total number of bytes transmitted from the interface since the last reset
(Raw) or the last counter reset (Current).
Bytes Rcvd - reports the total number of valid bytes received on the interface since the last reset
(Raw) or the last counter reset (Current).
Frames > 1518 - reports the number of frames received on the interface that had a length
(excluding framing bits, but including the CRC) of 1519 or higher.
Frames > Limit - reports the number of frames received on the interface that had a length that
exceeded the user-defined Frame Size.
Line Rate Utilization - This is the percent utilization of the Ethernet segment on a scale of 0 to
100 percent.
5.3.1.2 Layer 2 Error Statistics Screen
Frames Sent - reports the total number of frames sent from the interface since the last reset
(Raw) or the last counter reset (Current).
Frames Rcvd - reports the total number of valid frames received on the interface since the last
reset (Raw) or the last counter reset (Current).
Collisions - reports the number of collisions that the interface encountered when attempting to
transmit a frame over a half duplex connection. The 9145E10G is full duplex, so this counter will
always show 0.
Late Collisions - reports the number of collisions that the interface encountered later than 512 bit-
times into the frame when attempting to transmit a frame over a half duplex connection. The
9145E10G is full duplex, so this counter will always show 0.
Alignment Errors - reports the number of frames received on the interface that had a non-integral
number of octets and a bad CRC. The interface will discard the frame.
Undersize < 64 - reports the number of frames received on the interface that were less than 64
bytes in length (excluding framing bits, but including the CRC), and were otherwise well formed.
The interface will discard the frame.
Oversize > MaxFrameSize- reports the number of frames received on the interface that had a
length (excluding framing bits, but including the CRC) greater than the Maximum Frame Size set
for the unit, inclusive.
See the Functional Configuration screen for information on how to set the Maximum Frame Size.
The interface will discard the frame.
Fragments - reports the number of frames received on the interface that were not an integral
number of bytes in length or that had a bad CRC, and were less than 64 bytes in length (excluding
framing bits but including the CRC). The interface will discard the frame.