Datasheet

15-19
Cisco ONS 15454 SDH Reference Manual, R7.0
October 2008
Chapter 15 Performance Monitoring
15.6 Performance Monitoring for Ethernet Cards
15.6 Performance Monitoring for Ethernet Cards
The following sections define performance monitoring parameters and definitions for the E-Series,
G-Series, and ML-Series Ethernet cards.
15.6.1 E-Series Ethernet Card Performance Monitoring Parameters
CTC provides Ethernet performance information, including line-level parameters, port bandwidth
consumption, and historical Ethernet statistics. The E-Series Ethernet performance information is
divided into the Statistics, Utilization, and History tabbed windows within the card view Performance
tab window. The following sections describe PM parameters provided for the E100T-G and E1000-2
Ethernet cards.
15.6.1.1 E-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.
Table 15-7 defines the E-Series Ethernet card statistics parameters.
Table 15-7 E-Series Ethernet Statistics Parameters
Parameter Meaning
Link Status Link integrity indicator (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 alignment errors (received incomplete frames).
Rx Runts Measures undersized packets with bad cyclic redundancy check (CRC)
errors.
Rx Shorts Measures undersized packets with good CRC errors.
Rx Oversized + Jabbers Measures oversized packets and jabbers. Size is greater than 1522 errors
regardless of CRC errors.
Rx Giants Number of packets received that are greater than 1518 bytes in length for
untagged interfaces and 1522 bytes for tagged interfaces.
Tx Collisions Number of transmit packets that are collisions; the port and the attached
device transmitting at the same time caused collisions.
Tx Late Collisions Number of frames that were not transmitted since they encountered a
collision outside of the normal collision window. Normally, late collision
events should occur only rarely, if at all.