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About the RMON
Groups
The IETF defines nine groups of Ethernet RMON statistics. The switch
supports the following four of these groups:
■
Statistics
■
History
■
Alarms
■
Events
This section describes these groups, and discusses how they can be used.
Statistics
The RMON Ethernet Statistics group provides traffic and error statistics
showing packets, bytes, broadcasts, multicasts, and errors on a LAN
segment or VLAN.
Information from the Statistics group is used to detect changes in traffic
and error patterns in critical areas of the network.
History
The History group provides historical views of network performance by
taking periodic samples of the counters supplied by the Statistics group.
The group features user-defined sample intervals and bucket counters for
complete customization of trend analysis.
The group is useful for analysis of traffic patterns and trends on a LAN
segment or VLAN, and to establish baseline information indicating
normal operating parameters.
Alarms
The Alarms group provides a versatile, general mechanism for setting
threshold and sampling intervals to generate events on any RMON
variable. Both rising and falling thresholds are supported, and thresholds
can be on the absolute value of a variable or its delta value. In addition,
alarm thresholds may be autocalibrated or set manually.
Alarms inform you of a network performance problem and can trigger
automated action responses through the Events group.
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Страница 1: ... http www 3com com SuperStack II Switch 9100 User Guide Part No DUA1770 5AAA01 Published January 2000 ...
Страница 10: ...GLOSSARY INDEX INDEX OF COMMANDS 3COM CORPORATION LIMITED WARRANTY EMC STATEMENTS ...
Страница 14: ...14 ABOUT THIS GUIDE ...
Страница 32: ...32 CHAPTER 2 INSTALLATION AND SETUP ...
Страница 62: ...62 CHAPTER 3 ACCESSING THE SWITCH ...
Страница 80: ...80 CHAPTER 4 VIRTUAL LANS VLANS ...
Страница 86: ...86 CHAPTER 5 FORWARDING DATABASE FDB ...
Страница 98: ...98 CHAPTER 6 SPANNING TREE PROTOCOL STP ...
Страница 110: ...110 CHAPTER 7 QUALITY OF SERVICE QOS ...
Страница 124: ...124 CHAPTER 8 STATUS MONITORING AND STATISTICS ...
Страница 130: ...130 CHAPTER 9 USING THE WEB INTERFACE ...
Страница 136: ...136 CHAPTER 10 SOFTWARE UPGRADE AND BOOT OPTIONS ...
Страница 156: ...156 APPENDIX C TROUBLESHOOTING ...
Страница 162: ......
Страница 176: ...176 INDEX ...
Страница 180: ...180 INDEX OF COMMANDS ...