Enterasys Networks 2E42_27R Benutzerhandbuch

Link Error Rate Estimate
The link error rate estimate is a cumulative long-term average of the bit error 
rate, which represents the quality of the physical link. The link error rate 
estimate is computed when the port is connected and every 10 seconds 
thereafter. It ranges from 10

-4

 to 10

-15 

and is reported as a whole integer. For 

example, if the port’s link error rate estimate is computed to be 10

-5

, the value 

reported in this field would be 5, which represents an actual rate of 1,250 bit 
errors per second. A lower link error rate estimate indicates a higher bit error 
rate as shown in Figure 3-1.

Link Error Monitor Count
The aggregate link error monitor count. This count is set to zero on station 
power up and increments each time the port’s link error monitor detects an 
error. An increasing link error monitor count usually indicates a problem with 
the connectors or the cable between this port and the node.

Link Error Rate Cutoff
The link error rate threshold at which a link connection is flagged as faulty 
and the port disabled by SMT. The default link error rate cutoff threshold is 7, 
which represents 12.5 bit errors per second. 

Link Error Rate Alarm
The link error rate threshold above which an alarm for the port will be 
generated. The default link error rate alarm threshold is 8, which represents 
1.25 bit errors per second.

Link Error Monitor Reject Count
The link error monitor count of the times the link has been rejected.

.

000000125

.00000125

.0000125

.000125

.00125

.0125

.125
1.25
12.5

125

1250

12500

Bit Errors
per Second

Reported Link Error Rate Estimate (n)

4

5 

6

7

8

9

10

111213

14

15