Cabletron-systems 2000 User Manual download pdf (Page 100)

Alarm Conﬁguration

3-2 Basic Alarm Conﬁguration

Using the Advanced Alarms feature, you can deÞne custom alarms for almost any

MIB-II or RMON object, as long as it is present in the device Þrmware and its

value is deÞned as an integer (including counters, timeticks, and gauges). All

aspects of these alarms are user-selectable: thresholds can be established on either

the absolute or delta value for a variable; events can be conÞgured to create a log,

generate a trap, or both; and for Cabletron devices that support the Actions MIB,

events can also be conÞgured to perform any deÞned SNMP SET or series of SETs

on device objects. The Advanced Alarms feature also allows you to conÞgure any

events you wish to use in conjunction with the Packet Capture functionality. (For

more information on using the Packet Capture feature, see the RMON UserÕs

Guide included with your software.)

The Basic Alarms feature allows you to assign alarms to any interface type; using

the Advanced Alarms feature, you need only be sure to select variables

appropriate to the interface Ñ Ethernet for Ethernet, Token Ring for Token Ring,

etc. Ñ when deÞning your alarms.

Basic Alarm Conﬁguration

Using the Basic Alarm ConÞguration application, you can deÞne both rising and

falling alarm thresholds for three selected MIB-II objects: ifInOctets, ifInNUcast,

and ifInErrors. Because these pre-selected objects are not RMON-speciÞc, you can

conÞgure alarms for all interfaces installed in your SmartSwitch 2000 Ñ including

those, like FDDI, for which no speciÞc RMON statistics currently exist.

In addition to conÞguring separate rising and falling thresholds, you can also

conÞgure your deviceÕs response to an alarm condition: when a threshold is

crossed, the RMON device can create a log of alarm events, send a trap notifying

your management workstation that an alarm condition has occurred, or both; you

can even conÞgure an alarm to enable or disable bridging on the offending port in

response to a rising or falling alarm condition.

TIP

You can use the RMON Alarms feature to conÞgure alarms for MIB objects on FDDI,

ATM, and other interfaces that donÕt speciÞcally support RMON: the Basic Alarms

window provides MIB II objects as alarm variables; Advanced Alarm conÞguration allows

you to select any object as an alarm variable, as long as its value is deÞned as an integer

and you assign the correct instance value. See step 5 on page 3-19 and the Note which

follows it for more information on assigning the correct instance value to an advanced

alarm.

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Cabletron-systems 2000 User Manual Page 100