3Com 9100 manual Port Statistics, Accuracy, To view port statistics, use the following command

Port Statistics 113

Port Statistics	The Switch 9100 provides a facility for viewing port statistic information.
	The summary information lists values for the current counter against each
	port on each operational module in the system, and it is refreshed
	approximately every two seconds. Values are displayed to nine digits of
	accuracy.
	To view port statistics, use the following command:
	show ports <portlist> stats

The following port statistic information is collected by the switch:

■Link Status — The current status of the link. Options are

■Ready (the port is ready to accept a link)

■Active (the link is present at this port)

■Transmit Packet Count (Tx Pkt Count) — The number of packets that have been successfully transmitted by the port.

■Transmit Byte Count (Tx Byte Count) — The total number of data bytes successfully transmitted by the port.

■Total Collisions — The total number of collisions seen by the port, regardless of whether a device connected to the port participated in any of the collisions.

■Received Packet Count (Rx Pkt Count) — The total number of good packets that have been received by the port.

■Received Byte Count (RX Byte Count) — The total number of bytes that were received by the port, including bad or lost frames. This number includes bytes contained in the Frame Check Sequence (FCS), but excludes bytes in the preamble.

■Receive Broadcast (RX Bcast) — The total number of frames received by the port that are addressed to a broadcast address.

■Receive Multicast (RX Mcast) — The total number of frames received by the port that are addressed to a multicast address.