3com 3800 ユーザーズマニュアル

The Alarms group provides a versatile, general mechanism for setting 
threshold and sampling intervals to generate events on any MIB 
variable. Alarms inform you of a network performance problem and 
they can trigger automated action responses through the Events group.

Effective use of the Events group saves you time. Rather than having to 
watch real-time graphs for important occurrences, you can depend on 
the Event group for notification. Through the SNMP traps, events can 
trigger other actions, providing a mechanism for an automated 
response to certain occurrences.

Using the RMON features of your Switch has the following three main 
advantages:

■

It improves network monitoring efficiency.

■

It allows you to manage the network in a more proactive manner.

■

It reduces the load on the network and the management 
workstation.

Using RMON probes allows you to remain at one workstation and 
collect information from widely dispersed LAN segments or VLANs. 
This means that the time taken to reach a problem site, set up 
equipment, and begin collecting information is largely eliminated.

If they are configured correctly, RMON probes deliver information 
before problems occur. This means that you can take action before 
problems impact users. In addition, probes record the behavior of your 
network, so that you can analyze the causes of problems.

Traditional network management involves a management workstation 
polling network devices at regular intervals to gather statistics and 
identify problems or trends. As network sizes grow and traffic levels 
increase, this approach places a strain on the management 
workstation and also generates large amounts of traffic.

SW3800.BK  Page 13  Tuesday, May 5, 1998  5:20 PM