Chapter 50 Using Switch Topn Report; Understanding How The Switch Topn Reports Utility Works; Running Switch Topn Reports Without The Background Keyword; Running Switch Topn Reports With The Background Keyword - Cisco WS-C6506 Software Manual

Understanding How the Switch TopN Reports Utility Works

The Switch TopN Reports utility collects the following data for each physical port:
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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 that is chosen from the
values that are shown in
Table 50-1
Metric Value
util
bytes
pkts
bcst
mcst
errors
overflow

Running Switch TopN Reports without the Background Keyword

If you enter the show top command without specifying the background keyword, processing begins but
the system prompt does not reappear on the screen and you cannot enter the 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 Keyword

If you enter the show top command and specify the background keyword, processing begins and the
system prompt reappears immediately. When processing completes, the reports do not display
immediately on the screen but are saved for later viewing.
The system notifies you when the reports are complete by sending a syslog message to the screen. Enter
the show top report [report_num] command to view the completed 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.
Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
50-2
Port utilization (util)
Number of in/out bytes (bytes)
Number of in/out packets (pkts)
Number of in/out broadcast packets (bcst)
Number of in/out multicast packets (mcst)
Number of in errors (in-errors)
Number of buffer-overflow errors (buf-ovflw)
Table
Valid Switch TopN Reports Metric Values
50-1.
Definition
Utilization
Input/output bytes
Input/output packets
Input/output broadcast packets
Input/output multicast packets
Input errors
Buffer overflows
Chapter 50 Using Switch TopN Reports
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