pstats

| Port Statistics
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. Back to Top 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 | 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.
Transmitted bytes | The total number of bytes sent on each port.
Total transmitted packets | The total number of packets sent on each port. This includes unicast, multicast, and broadcast packets.
Received bytes | The total number of bytes received on each port.
Total received packets | The total number of packets received on each port. This includes well-formed unicast, multicast, and broadcast packets.
Total transmit error packets | The total number of error packets sent. This includes total collisions, late collisions, and excessive collisions.
Total receive error packets | The total number of error packets received. This includes FCS and alignment errors.
Back to Top 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 | 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.
Unicast packets | 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.
Multicast packets | 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.
Broadcast packets | 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.
Total collision packets | 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.
Excessive collision packets | The total number of packets that were not sent after 16 collisions. It includes packets of all destination address types.
Late collision packets | 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.
Back to Top 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 | 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.
Unicast packets | 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.
Multicast packets | 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.
Broadcast packets | 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.
FCS error packets | The total number of packets received with FCS errors. It excludes undersized packets with FCS errors.
Alignment errors packets | 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.
Oversize packets | The total number of packets received of more than 1518 bytes that had both good and bad FCS values.
Undersize packets | The total number of packets received that were smaller than 64 octets long and were otherwise well-formed.
Collision fragments | The total number of frames smaller than 64 bytes that have an integral number of bytes and bad FCS values.
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