
550
C
HAPTER
18: D
EVICE
M
ONITORING
An alarm calculates the difference in counter values over a set time
interval and remembers the high and low values. When the value of a
counter exceeds a preset threshold, the alarm reports this occurrence.
Using Transcend Network Control Services or any other SNMP network
management application, you can assign alarms to monitor any counter,
gauge, timetick, or integer. See the documentation for your management
application for details about setting up alarms.
Setting Alarm Thresholds
Thresholds determine when an alarm
reports that a counter has exceeded a certain value. You can set alarm
thresholds manually through the network, choosing any value for them
that is appropriate for your application. The network management
software monitors the counters and thresholds continually during normal
operations to provide data for later calibration.
Figure 97 shows a counter with thresholds set manually.
Figure 97
Manually Set Thresholds
You can associate an alarm with the high threshold, the low threshold, or
both. The actions that occur because of an alarm depend on the network
management application.
Time
Counter
User specified
high threshold
User specified
low threshold
Содержание CoreBuilder 3500
Страница 44: ...44 CHAPTER 2 MANAGEMENT ACCESS ...
Страница 58: ...58 CHAPTER 3 SYSTEM PARAMETERS ...
Страница 86: ...86 CHAPTER 5 ETHERNET ...
Страница 112: ...112 CHAPTER 6 FIBER DISTRIBUTED DATA INTERFACE FDDI ...
Страница 208: ...208 CHAPTER 9 VIRTUAL LANS ...
Страница 256: ...256 CHAPTER 10 PACKET FILTERING ...
Страница 330: ...330 CHAPTER 12 VIRTUAL ROUTER REDUNDANCY PROTOCOL VRRP ...
Страница 356: ...356 CHAPTER 13 IP MULTICAST ROUTING ...
Страница 418: ...418 CHAPTER 14 OPEN SHORTEST PATH FIRST OSPF ...
Страница 519: ...RSVP 519 Figure 94 Sample RSVP Configuration Source station End stations Routers ...
Страница 566: ...566 CHAPTER 18 DEVICE MONITORING ...
Страница 572: ...572 APPENDIX A TECHNICAL SUPPORT ...
Страница 592: ...592 INDEX ...