Cisco WS-C4003 Software Guide - Page 290
Running Switch TopN Reports without the Background Option, Running Switch TopN Reports with
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Understanding How Switch TopN Reports Works Chapter 21 Using Switch TopN Reports When the Switch TopN Reports utility starts, it gathers data from the appropriate hardware counters, and then goes into sleep mode for a user-specified period. When the sleep time ends, the utility gathers the current data from the same hardware counters, compares the current data from the earlier data, and stores the difference. The data for each port is sorted using a user-specified metric chosen from the values shown in Table 21-1. Table 21-1 Valid Switch TopN Reports Metric Values Metric Value util bytes pkts bcst mcst errors overflow Definition Utilization Input/output bytes Input/output packets Input/output broadcast packets Input/output multicast packets Input errors Buffer overflows Running Switch TopN Reports without the Background Option If you enter the show top command without specifying the background option, processing begins but the system prompt does not reappear on the screen and you cannot enter other commands while the report is being generated. You can terminate the Switch TopN process before it finishes by pressing Ctrl-C from the same console or Telnet session, or by opening a separate console or Telnet session and entering the clear top [report_num] command. After the Switch TopN Reports utility finishes processing the data, it displays the output on the screen immediately. The output is not saved. Running Switch TopN Reports with the Background Option If you enter the show top command and specify the background option, processing begins and the system prompt reappears immediately. When processing completes, Switch TopN reports do not display immediately on the screen, but are saved for later viewing. The system notifies you when the Switch TopN reports are complete by sending a syslog message to the screen. Enter the show top report [report_num] command to view the completed Switch TopN reports. The system displays only those reports that are completed. For reports that are not completed, the system displays a short description of the Switch TopN process information. You can terminate a Switch TopN process invoked with the background option only by entering the clear top [report_num] command. Pressing Ctrl-C does not terminate the process. Completed Switch TopN reports remain available for viewing until you remove them using the clear top {all | report_num} command. 21-2 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 78-12647-02