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450
C
HAPTER
10: R
MON
Table creation or deletion may fail if:
■
an incorrect community string is used
■
there are insufficient resources on the target device to create a table
You should try to delete RMON tables from a device when you no longer
require them. RMON tables take up resources on network devices, and
may affect the device's performance.
Be careful not to delete tables that you yourself did not create - they may
be in use by 3Com Network Director, or by another management
application on your network.
Examples
This section describes some RMON examples supported by 3Com
Network Director.
How do I graph errors
on my core switch
links?
The RMON Statistics group contains useful error counters for interfaces
on devices that support this table. The RMON history group contains the
same values stored historically for predefined sampling periods. The
RMON host and matrix groups allow you to see the same data broken
down by specific hosts on the network.
If you know which interface on your core switch you are interested in,
launch RMON directly from the device icon on the 3Com Network
Director map. Alternatively, launch it from the right-click menu of an
attached link.
Launch your chosen RMON group, and from the
View
, select the
Errors
view. clicking
OK
will launch
RMONView
, which will fetch and display the
following:
Table 78
Errors
Statistics
Live counts of total errors seen on this interface
History
Historical counts of total errors seen on this interface
Host
Error packets transmitted by each host seen on this
interface
Matrix
Error packets included in every conversation between
pairs of hosts seen on this interface.
Summary of Contents for 3C15500 - Network Director - PC
Page 4: ......
Page 34: ......
Page 38: ...34 ABOUT THIS GUIDE ...
Page 50: ...46 CHAPTER 1 GETTING STARTED ...
Page 64: ...60 CHAPTER 2 PRODUCT ACTIVATION ...
Page 213: ...Components 209 Figure 75 Export to Visio Dialog Box ...
Page 220: ...216 CHAPTER 5 WORKING WITH THE MAP Figure 84 Double Clicking on a Router in the Tree ...
Page 264: ...260 CHAPTER 6 VIEWING DEVICE DETAILS Figure 117 Security Tab for a Device ...
Page 276: ...272 CHAPTER 6 VIEWING DEVICE DETAILS ...
Page 322: ...318 CHAPTER 7 MONITORING THE NETWORK ...
Page 385: ...Examples 381 Figure 189 Attach Alerts Dialog Box ...
Page 406: ...402 CHAPTER 9 PERFORMANCE REPORTING ...
Page 431: ...Components 427 History View dialog box Figure 210 History View Dialog Box ...
Page 440: ...436 CHAPTER 10 RMON Host View dialog box Figure 219 Host View Dialog Box ...
Page 476: ...472 CHAPTER 11 CREATING REPORTS ...
Page 502: ...498 CHAPTER 12 CONFIGURING SINGLE DEVICES ...
Page 526: ...522 CHAPTER 13 VLAN MANAGEMENT Figure 272 Options Dialog Box VLANs Tab ...
Page 567: ...Components 563 Figure 305 Selecting the Link to the End Station on the Map ...
Page 626: ...622 CHAPTER 14 BULK CONFIGURATION ...
Page 684: ...680 CHAPTER 16 UPGRADING DEVICE SOFTWARE ...
Page 814: ...810 CHAPTER 19 BACKING UP DEVICE CONFIGURATIONS ...
Page 838: ...834 CHAPTER 20 LIVE UPDATE ...
Page 894: ...890 APPENDIX G ADDING MAC ADDRESS VENDOR TRANSLATIONS ...