Cabletron Systems 9H42X-XX Manual Do Utilizador

3-1

Accessing the Basic and Advanced Alarms windows; creating a basic alarm; creating an advanced 
alarm; creating events; assigning actions to events; viewing the event log

Through the RMON Alarm and Event functionality supported by your

 

9H42x-xx, 

you can configure alarms and events (and, where appropriate, actions) for each 
available bridging interface.

Although Alarms and Events are defined as separate RMON groups, neither one 
can function properly without the other: you can define an alarm threshold, but if 
it doesn’t point to an event, there will be no indication that the threshold has been 
crossed; similarly, you can define an event, but unless it is attached to an alarm 
threshold, it won’t be triggered. Each is an essential part of the same notification 
process: the alarm defines a set of conditions you want to know about, and the 
event determines the means of letting you know those conditions have occurred. 

Events are also an integral part of the filter and packet capture functionality: you 
can start and stop packet capturing in response to events, or a successful packet 
capture can generate its own event. 

SPECTRUM Element Manager provides two means for configuring RMON 
alarms: using the Basic Alarms window, you can define both rising and falling 
alarm thresholds for up to three pre-selected MIB-II variables per interface; based 
on the options you select, the application automatically creates the necessary 
events (to log alarm occurrences, generate a trap, or both) and — for Cabletron 
devices which support the new Actions MIB — adds the requested actions to 
those events (to enable or disable bridging at the selected interface).

The Alarm, Event, and Actions windows described in this chapter are identical to those 
provided via the RMON utility. For more information about other features of RMON, see 
the RMON User’s Guide included with your software.