Extreme Networks ExtremeWare 7.2e, Инструкция по установке и эксплуатации

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ExtremeWare 7.2e Installation and User Guide 123
8
Status Monitoring and Statistics
This chapter describes the following topics:
• Port Statistics on page 123
• Port Errors on page 124
•
Port Monitoring Display Keys on page 125
• Setting the System Recovery Level on page 125
• Event Management System/Logging on page 125
• RMON on page 138
Viewing statistics on a regular basis allows you to see how well your network is performing. If you
keep simple daily records, you will see trends emerging and notice problems arising before they cause
major network faults. In this way, statistics can help you get the best out of your network.
Port Statistics
ExtremeWare 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 2 seconds. Values are displayed to nine digits of accuracy.
To view port statistics, use the following command:
show ports {mgmt | <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).
• Transmitted Packet Count (Tx Pkt Count)— The number of packets that have been successfully
transmitted by the port.
• Transmitted Byte Count (Tx Byte Count)— The total number of data bytes successfully transmitted
by the port.
• Received Packet Count (Rx Pkt Count)— The total number of good packets that have been received
by the port.