3Com 4007, Руководство по внедрению, Страница: 618 / 684

618 C
HAPTER
23: D
EVICE
M
ONITORING
Event Logging
The event log messages display real-time information about the state of
the system, a specific service, or both, and can help you diagnose
site-specific problems.
Event Logging is implemented from the EME module. See the chapters in
Part II of this guide for more information.
Baselining
Normally, statistics for MACs and ports start to compile when you turn
the system on. Baselining allows you to view statistics compiled over the
period of time since a baseline was set. By viewing statistics relative to a
baseline, you can more easily evaluate recent activity in your system or on
your network.
Baselining is implemented for both Layer 2 and Multilayer Switching
Modules of the Switch 4007 system.
Important
Considerations
■
Baselining is maintained across Administration Console sessions.
Statistics that you view after setting the baseline indicate that they are
relative to the baseline. To view statistics as they relate only to the
most recent power-on, disable the baseline.
■
Baselining affects the statistics that are displayed for Ethernet ports
and bridges.
Displaying the
Current Baseline
You can get a display the current baseline to see when the baseline was
last set and to determine if you need a newer baseline for viewing
statistics.
Setting a Baseline You can reset the baseline counters to zero ( 0 ) . The system maintains the
accumulated totals since power-on. The baseline is time-stamped.
Enabling or Disabling
Baselines
When you reenable a baseline, the counters return to the values that
accumulated since the most recent baseline that you set. Disabling a
baseline returns the counters to the total accumulated values since the
last power up.