Specifications

Chapter 4 Troubleshooting and Diagnostics Installation and Operation Manual
4-4 Monitoring Performance MPW-1 MP-4100 Ver. 2.0
2. On the Ethernet port screen, select Statistics.
You will see the Statistics screen for the selected Ethernet port. The
screen consists of three pages:
 To continue to the next page, type n (next)
 To return to the previous page, type p (previous).
Table 4-3 explains the Ethernet port statistics parameters.
The information is accumulated continuously while the MPW-1 operates, and is
automatically refreshed every few seconds. You can clear the displayed statistics
(that is, reset the displayed performance monitoring counters) by typing C. The
counters are also reset when the MPW-1 is powered up.
Table 4-3. Ethernet Port Physical Layer Performance Monitoring Statistics
Parameter Description
Rx Total Frames Total number of frames received through the corresponding Ethernet port
Rx Total Octets Total number of data octets carried by all frames received through the
corresponding Ethernet port
Rx Correct Frames Total number of good frames received through the corresponding Ethernet
port
Rx FCS Errors Total number of frames received by the corresponding Ethernet port which
has an invalid FCS, but met the following conditions:
• Frame data length is between 64 bytes, and 1518 or 1536 bytes
(depending on mode)
• Collision event has not been detected
• Late collision event has not been detected
Rx Jabber Errors Total number of frames received by the corresponding Ethernet port during
jabber (such frames are frames with a data field length exceeding 1518 or
1536 bytes, and also having invalid CRC)
Rx Fragments Errors Number of fragmented frames received at the corresponding Ethernet port (a
fragmented frame is a frame with a data field length less than 64 bytes and
invalid CRC, for which no collision event and no late collision event have not
been detected during its reception)
Rx Pause Frames Total number of pause frames (used for flow control) received through the
corresponding Ethernet port
Rx Undersized Frames Total number of frames with size less than 64 bytes received through the
corresponding Ethernet port
Rx Oversized Frames Total number of frames with size more than the maximum allowed received
through the corresponding Ethernet port
Rx Discard Frames Total number of valid frames received by the corresponding Ethernet port
that have been discarded because of a lack of buffer space. This includes
frames discarded at ingress, as well as those dropped due to priority and
congestion considerations at the output queues
Rx Errors Total number of frames received by the corresponding Ethernet port that had
other types of errors