Enterasys Networks 6000 User Manual

Managing Ethernet MicroLAN Modules

5-20

Alarm Limits

Figure 5-8. Port Alarm Limits Window

The Alarm Limits window displays the following fields:

Use the text box in this field to enter the number of collisions per good packet you wish to 
allow on the selected repeater, board, or port before an alarm is generated; allowable 
values are 1-15. For example, if you enter a value of 1, the alarm will be generated if the 
repeater, board, or port experiences an average of one collision per good packet received 
during the configured time base (see the explanation for “within,” below). In terms of 
percentages, an alarm threshold value of 1 would generate an alarm if 50% of your packets 
were collisions (one collision for every good packet); a threshold value of 15 would 
generate an alarm if 93.75% of your packets were collisions (15 collisions for every good 
packet). Therefore, the lower you set your threshold value, the lower the percentage of 
collisions per good packet you are allowing.

Remember, a repeater- or board-level alarm will calculate the number of collisions per 
good packet based on all traffic received on the repeater channel; a port-level alarm will 
make the calculation based on traffic on the specific port only.