Disabling a Basic Alarm

Alarm Conﬁguration

For more information on how actions are triggered, see How Rising and

Falling Thresholds Work, page 4-26.

8.Click in the Falling Threshold ﬁeld; enter the low threshold value for this alarm. Remember, compared values are always relative, or delta values (the difference between the value counted at the end of the current interval and the value counted at the end of the previous interval); be sure to set your thresholds accordingly.

Remember, too, when conﬁguring aKilobits alarm, SPECTRUM Element Manager converts octets into kilobits (units of 125 bytes, or octets) for you; for example, to set a falling threshold of 625 octets, enter a threshold value of 5.

9.In the Falling Action ﬁeld, click to select the action you want your device to take in response to a falling alarm: Enable Port, Disable Port, or None. Note that this action enables and disables only bridging at the speciﬁed port, and not the interface itself.

For more information on how actions are triggered, see How Rising and Falling Thresholds Work, page 4-26.

Remember, the Actions Þelds will be grayed out for devices conÞgured to operate in

TIP SecureFast switching mode, as there is no active bridging component on those interfaces.

10.Click to set your changes. If you have made any errors in conﬁguring alarm parameters (using an invalid rising or falling threshold, for example, or neglecting to supply a polling interval), either an error window with the appropriate message will appear, or a beep will sound and the cursor will blink

in the ﬁeld which contains the error. Correct the noted problem(s), and click

again.

Once you click , the conÞgured alarm parameters will be set for every selected interface, and the alarms will automatically be enabled; the list box display will also refresh to reßect these changes.

To conÞgure additional alarms, or alarms of a different type, select the appropriate alarm variable at the top of the window, highlight the appropriate interface(s), and repeat the procedures outlined above.

Using the button at the bottom of the window actually performs two functions: it both disables the alarm and deletes the alarm entry (and its associated event and action entries) from device memory to help conserve device resources. In the list box display, the parameters for any ÒdisabledÓ alarm are automatically reset to their default values.

4-8	Basic Alarm Conﬁguration