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Cisco ONS 15327 User Documentation, R3.3
June 2002
Chapter 9 Ethernet Operation
Spanning Tree (IEEE 802.1D)
Note
Green represents forwarding spans and purple represents blocked (protect) spans. If you have a packet
ring configuration, at least one span should be purple.
9.6.5 Ethernet Performance Screen
CTC provides Ethernet performance information that includes line-level parameters, the amount of port
bandwidth used, and historical Ethernet statistics.
9.6.5.1 Statistics Window
The Ethernet statistics screen lists Ethernet parameters at the line level.
defines the parameters.
Display the CTC card view for the Ethernet card and click the
Performance > Statistics
tabs to display
the screen.
The Baseline button resets the values on the Statistics tab to zero. The Refresh button manually refreshes
statistics. Auto-Refresh
sets a time interval for automatic refresh of statistics to occur.
Table 9-7
Ethernet Parameters
Parameter
Meaning
Link Status
Indicates whether or not link integrity is present; 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; alignment errors are
received incomplete frames.
Rx Runts
Number of packets received that are less than 64 bytes in length.
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 Excessive
Number of consecutive collisions.
Tx Deferred
Number of packets deferred.
Summary of Contents for ONS 15327
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Page 44: ...Procedures xlii Cisco ONS 15454 Installation and Operations Guide R3 2 June 2002 ...
Page 540: ...Glossary GL 16 Cisco ONS 15327 User Documentation R3 3 June 2002 ...