Dell PowerConnect Brocade M6505 Brocade 7.1.0 Fabric Watch Administrator's Gui - Page 37

Fabric Watch alarm behavior

Get Dell PowerConnect Brocade M6505 PDF manuals and user guides View all Dell PowerConnect Brocade M6505 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 37 highlights

Fabric Watch alarm behavior 2 Figure 4 shows a sample graph of data obtained by Fabric Watch (the type of data is irrelevant to the example). A high threshold of 2 is specified to trigger an event. A time base of minute is defined. An event occurs only if the rate of change in the specific interval (one minute in this example) is across the threshold boundary. It should be either higher than the high threshold limit or lower than the low threshold limit. As illustrated on the tenth sample, the counter value changes from 0 to 1; hence calculated rate of change is 1 per minute. At the thirteenth sample, the rate of change is 2 per minute. The rate of change must be at least 3 per minute to exceed the event-triggering requirement of 2, which is met on the eighteenth sample. FIGURE 4 Event trigger Fabric Watch alarm behavior Fabric Watch alarm behavior depends on the threshold states associated with the Above, Below and Changed thresholds. Threshold states can be INFORMATIVE, IN_RANGE, and OUT_OF_RANGE. Notifications are generated only for the following transitions: • IN_RANGE to OUT_OF_RANGE • OUT_OF_RANGE to IN_RANGE No alarm is generated for INFORMATIVE to IN_RANGE (or IN_RANGE to INFORMATIVE). Fabric Watch Administrator's Guide 17 53-1002752-01

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
Fabric Watch Administrator’s Guide
17
53-1002752-01
Fabric Watch alarm behavior
2
Figure 4
shows a sample graph of data obtained by Fabric Watch (the type of data is irrelevant to
the example). A high threshold of 2 is specified to trigger an event. A time base of
minute
is
defined. An event occurs only if the rate of change in the specific interval (one minute in this
example) is across the threshold boundary. It should be either higher than the high threshold limit
or lower than the low threshold limit.
As illustrated on the tenth sample, the counter value changes from 0 to 1; hence calculated rate of
change is 1 per minute. At the thirteenth sample, the rate of change is 2 per minute. The rate of
change must be at least 3 per minute to exceed the event-triggering requirement of 2, which is met
on the eighteenth sample.
FIGURE 4
Event trigger
Fabric Watch alarm behavior
Fabric Watch alarm behavior depends on the threshold states associated with the Above, Below
and Changed thresholds. Threshold states can be INFORMATIVE, IN_RANGE, and OUT_OF_RANGE.
Notifications are generated only for the following transitions:
•
IN_RANGE to OUT_OF_RANGE
•
OUT_OF_RANGE to IN_RANGE
No alarm is generated for INFORMATIVE to IN_RANGE (or IN_RANGE to INFORMATIVE).