Cabletron Systems 9H42X-XX

Alarm Conﬁguration

3-4 Basic Alarm Conﬁguration

Viewing Alarm Status

The Basic Alarm Conﬁguration window contains all the ﬁelds you need to

conﬁgure one or more of the three basic alarms available for each interface

installed in your RMON device:

Kilobits — Total Errors — Broadcasts/Multicasts

Use these ﬁelds at the top of the window to change the alarm type whose status is

displayed in the list box. For example, if the Kilobits option is selected, the

information in the list box pertains to the status of the Kilobits alarm type for each

installed interface. Before you conﬁgure an alarm or alarms, be sure the

appropriate option is selected here.

The available alarm variables are:

•Kilobits (ifInOctets) — tracks the number of octets of data received by the

selected interface. Note that this value has been converted for you from octets

(or bytes) to kilobits (or units of 125 bytes); be sure to enter your thresholds

accordingly. For example, to set a rising threshold of 1250 octets, enter a

threshold value of 10; to set a falling threshold of 625 octets, enter a threshold

value of 5.

•Total Errors (ifInErrors) — tracks the number of error packets received by the

selected interface.

•Broadcast/Multicast (ifInNUcast) — tracks the number of non-unicast — that

is, broadcast or multicast — packets received by the selected interface.

Port Number

Provides a sequential indexing of the interfaces installed in your RMON device.

IF Number

Displays the interface number assigned to each available interface. Note that

because of the mismatch between physical interfaces on the device and the

sequential port numbers assigned to the INB and the Ethernet/Fast Ethernet

interfaces, the INB interface is indexed 5 and the Ethernet/Fast Ethernet

interfaces are indexed 6 through 17.

IF Type

Displays each interface’s type: Ethernet or Other (for the INB interface). Note that

there is no type distinction between standard Ethernet and Fast Ethernet.

TIP

Note that the three pre-selected alarm variables are all MIB II variables; this allows you to

conﬁgure alarms for any installed interface — even those for which no speciﬁc RMON

statistics yet exist.