Cisco ONS 15454 SDH - Manual (Page 17)

15-17
Cisco ONS 15454 SDH Reference Manual, R4.6
April 2008
Chapter 15 Performance Monitoring
15.5.2 G-Series Ethernet Card Performance Monitoring Parameters
15.5.2.1 G-Series Ethernet Statistics Window
The Ethernet statistics window lists Ethernet parameters at the line level. The Statistics window provides
buttons to change the statistical values shown. The Baseline button resets the displayed statistics values
to zero. The Refresh button manually refreshes statistics. Auto-Refresh sets a time interval at which
automatic refresh occurs. The G-Series Statistics window also has a Clear button. The Clear button sets
the values on the card to zero, but does not reset the G-Series card.
Table 15-18 on page 15-17 defines the G-Series Ethernet card Statistics parameters.
Table 15-18 G-Series Ethernet Statistics Parameters
Parameter Meaning
Time Last Cleared A time stamp indicating the last time statistics were reset.
Link Status Indicates whether the Ethernet link is receiving a valid
Ethernet signal (carrier) from the attached Ethernet device;
up means present, and down means not present.
Rx Packets Number of packets received since the last counter reset.
Rx Bytes Number of bytes received since the last counter reset.
Tx Packets Number of packets transmitted since the last counter reset.
Tx Bytes Number of bytes transmitted since the last counter reset.
Rx Total Errors Total number of receive errors.
Rx FCS Number of packets with a Frame Check Sequence (FCS)
error. FCS errors indicate frame corruption during
transmission.
Rx Alignment Number of packets with received incomplete frames.
Rx Runts Measures undersized packets with bad cyclic redundancy
check (CRC) errors.
Rx Shorts Measures undersized packets with good cyclic redundancy
check (CRC) errors.
Rx Jabbers Total number of frames received that exceed the 1548-byte
maximum and contain CRC errors.
Rx Giants Number of packets received that are greater than 1530 bytes
in length.
Rx Pause Frames Number of received Ethernet IEEE 802.3z pause frames.
Tx Pause Frames Number of transmitted IEEE 802.3z pause frames.
Rx Pkts Dropped Internal
Congestion Number of received packets dropped due to overflow in
G-Series frame buffer.
Tx Pkts Dropped Internal
Congestion Number of transmit queue drops due to drops in the G-Series
frame buffer.
HDLC Errors High-level data link control (HDLC) errors received from
SDH/SONET (see note).
Rx Unicast Packets Number of unicast packets received since the last counter
reset.
Tx Unicast Packets Number of unicast packets transmitted.