38
C
HAPTER
3: C
OLLECTING
D
ATA
single segment. Traffix Manager uses RMON-2 functionality to build up a
picture of communicating devices on the network and the traffic flowing
between them, including network layer addresses and protocols seen.
For further information on RMON-1 and RMON-2, refer to the 3Com
®
RMON-1 and RMON-2 Backgrounder on the 3Com Web Site:
http://www.3com.com/nsc/501305.html
.
How Traffix
Manager Discovers
Network Devices
Using RMON-2
An agent which supports RMON-2 is able to watch the packets on the
network segment to which it is attached. Depending on the protocol in
use, most packets typically contain a source and destination address. The
RMON-2 agent decodes this address information and uses it to build
tables of data about the communicating devices and the traffic flowing
between them, including network layer addresses and protocols seen.
This information is then retrieved by Traffix Manager and is used to build
a graphical topology of your network (the Traffix Manager Map) and to
compile a list of active devices on your network.
As a result of the RMON-2 method of discovering devices, you may see
more than one object corresponding to the same physical device. For
example, separate entries for a device may be made under its ARP, IP and
IPX addresses. For the same reason, “non-device” objects, such as IP
broadcast and multicast addresses, will appear in the Map.
With no RMON-2 conversation data collected, Traffix Manager is able to
perform only limited functions.
If an agent selected for data collection supports RMON-1 only, Traffix
Manager is only able to collect line statistics data from that agent and
perform basic agent maintenance operations. See
Appendix I
,
“Using
RMON-1 Agents”
for more information.
Summary of Contents for Traffix Transcend Traffix Manager
Page 10: ......
Page 18: ......
Page 24: ...24 CHAPTER 1 TRAFFIX MANAGER OVERVIEW ...
Page 34: ......
Page 46: ...46 CHAPTER 4 GROUPING NETWORK DEVICES IN THE MAP Figure 6 Groupings dialog box ...
Page 48: ......
Page 56: ...56 CHAPTER 6 CONFIGURING AGENTS FOR DATA COLLECTION ...
Page 70: ...70 CHAPTER 8 DISPLAYING TRAFFIC IN GRAPHS ...
Page 88: ...88 CHAPTER 10 VIEWING EVENTS ...
Page 114: ......
Page 120: ...120 APPENDIX A TROUBLESHOOTING TRAFFIX MANAGER ...
Page 152: ...152 APPENDIX F SUPPORTED RMON 2 DEVICES ...
Page 156: ...156 APPENDIX G CONFIGURING 3COM STANDALONE RMON 2 AGENTS ...
Page 160: ...160 APPENDIX I USING RMON 1 AGENTS ...
Page 168: ......
Page 184: ...184 INDEX ...