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Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX
OL-4266-08
Chapter 56 Using the Top N Utility
Using the Top N Utility
Note When calculating the port utilization, the Top N utility bundles the Tx and Rx lines into the same counter
and also looks at the full-duplex bandwidth when calculating the percentage of utilization. For example,
a Gigabit Ethernet port would be 2000-Mbps full duplex.
Understanding Top N Utility Operation
When you enter the collect top command, processing begins and the system prompt reappears
immediately. When processing completes, the reports are not displayed immediately on the screen; the
reports are saved for later viewing. The Top N Utility notifies you when the reports are complete by
sending a syslog message to the screen.
To view the completed reports, enter the show top counters interface report command. The Top N
Utility displays only those reports that are completed. For reports that are not completed, the Top N
Utility displays a short description of the Top N process information.
To terminate a Top N process, enter the clear top counters interface report command. Pressing Ctrl-C
does not terminate Top N processes. The completed reports remain available for viewing until you
remove them by entering the clear top counters interface report {all | report_num} command.
Using the Top N Utility
These sections describe how to use the Top N Utility:
• Enabling Top N Utility Report Creation, page 56-3
• Displaying the Top N Utility Reports, page 56-3
• Clearing Top N Utility Reports, page 56-4
Table 56-1 Valid Top N Statistic Types
Statistic Type Definition
broadcast Number of input/output broadcast packets
bytes Number of input/output bytes
errors Number of input errors
multicast Number of input/output multicast packets
overflow Number of buffer overflows
packets Number of input/output packets
utilization Utilization
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