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To display the Port Statistics window, either
• Choose Monitor
> Port Statistics.
• Click View Port
Statistics from the Dashboard or from Monitor >
Trends.
The Port Statistics window displays the statistics
for data sent (transmitted) and received by the switch ports. The types
of statistics collected and displayed are grouped under these tabs:
• Overview
• Transmit Detail
• Receive Detail
The tables in this window show statistics collected
at each system refresh (every 60 seconds). To manually refresh the statistics,
click
Refresh on the toolbar.
You can sort the contents in each table column either
alphabetically or numerically by clicking the column heading.
To clear the statistics for a specific port, check
the check box for the specific port, and then click Clear Counters.
To clear the statistics for all the ports, check the check box at the
top of the far-left column, and then click Clear Counters. To
cancel any selections in the Clear column, click Cancel.
Note: Clearing the statistics on one tab
clears the statistics on the other tabs.
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Overview Tab
The Overview tab provides this information:
• The total number of
bytes sent and received on each port.
• The total number of
packets sent and received on each port.
• Total number of error
packets sent. This includes total collisions, late collisions, and excessive
collisions.
• Total number of error
packets received. This includes frame check sequence (FCS) and alignment
errors. Equipment being powered up or down can cause FCS and alignment
errors.
Port
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The number of the port, including
port type (such as Fa for Fast Ethernet and Gi for Gigabit Ethernet),
the module slot number (0, 1, or 2), and the specific port number.
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Transmitted bytes
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The total number of bytes sent on
each port.
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Total transmitted packets
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The total number of packets sent
on each port. This includes unicast, multicast, and broadcast packets.
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Received bytes
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The total number of bytes received
on each port.
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Total received packets
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The total number of packets received
on each port. This includes well-formed unicast, multicast, and broadcast
packets.
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Total transmit error packets
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The total number of error packets
sent. This includes total collisions, late collisions, and excessive
collisions.
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Total receive error packets
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The total number of error packets
received. This includes FCS and alignment errors.
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Transmit Detail Tab
The Transmit Detail tab provides this information:
• Transmitted unicast,
multicast, and broadcast packets on each port
• Detailed statistics
of errors sent to each port
Port
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The number of the port, including
port type (such as Fa for Fast Ethernet and Gi for Gigabit Ethernet),
the module slot number (0, 1, or 2), and the specific port number.
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Unicast packets
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The total number of well-formed
unicast packets sent by a port. It excludes packets sent with errors
or with multicast or broadcast destination addresses.
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Multicast packets
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The total number of well-formed
multicast packets sent by a port. It excludes packets sent with errors
or with unicast or broadcast destination addresses.
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Broadcast packets
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The total number of well-formed
broadcast packets sent by a port. It excludes packets sent with errors
or with unicast or multicast destination addresses.
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Total collision packets
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The total number of packets sent
without error after having 1 to 15 collisions. It includes packets of
all destination address types and excludes packets discarded because
of insufficient resources or late collisions.
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Excessive collision packets
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The total number of packets that
were not sent after 16 collisions. It includes packets of all destination
address types.
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Late collision packets
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The total number of packets discarded
because of late collisions detected during transmission. It includes
all sent packets that had a collision after the transmission of the
packet 64th byte. The preamble and start frame delimiter (SFD) are not
included in the frame byte count.
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Receive Detail Tab
The Receive Detail tab provides this information:
• Received unicast, multicast,
and broadcast packets on each port
• Detailed statistics
of receive errors on each port
Port
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The number of the port, including
port type (such as Fa for Fast Ethernet and Gi for Gigabit Ethernet),
the module slot number (0, 1, or 2), and the specific port number.
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Unicast packets
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The total number of well-formed
unicast packets received by a port. It excludes packets received with
errors, with multicast or broadcast destination addresses, or with oversized
or undersized packets. Also excluded are packets discarded or without
a destination.
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Multicast packets
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The total number of well-formed
multicast packets received by a port. It excludes packets received with
errors, with unicast or broadcast destination addresses, or with oversized
or undersize packets. Also excluded are packets discarded or without
a destination.
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Broadcast packets
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The total number of well-formed
broadcast packets received by a port. It excludes packets received with
errors, with unicast or multicast destination addresses, or with oversized
or undersize packets. Also excluded are packets discarded or without
a destination.
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FCS error packets
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The total number of packets received
with FCS errors. It excludes undersized packets with FCS errors.
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Alignment errors packets
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The total number of packets received
with alignment errors. It includes all the packets received with both
an FCS error and a nonintegral number of bytes.
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Oversize packets
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The total number of packets received
of more than 1518 bytes that had both good and bad FCS values.
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Undersize packets
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The total number of packets received
that were smaller than 64 octets long and were otherwise well-formed.
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Collision fragments
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The total number of frames smaller
than 64 bytes that have an integral number of bytes and bad FCS values.
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