Allied Telesis AT-S21 - Manual (Page 77)

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Menu: Ethernet statistics>Zero all statistics on
the entire system
You reset statistics counters because:
❑ The counters no longer reflect the current information.
For example, disabling a port to fix a problem does not
reset its counters. After the error clears and you manually
re-enable the port, you may want its statistics to
accumulate from a fresh start. Otherwise, the counters and
the graph not only still reflect information associated with
the error condition; the counters continue to increment
from the wrong baseline.
❑ As each frame type reaches the maximum of 2
32
(over 4
billion), the statistics for that frame type resets to zero. Once
this happens, the counters and graph become inaccurately
skewed.
To reset switch (system) counters
1. Select Ethernet Statistics from the main menu to display
the Receive Statistics graph.
2. Select Zero all statistics on the entire system .
Both Receive and Transmit counters and graphs are reset to zero.