3Com CoreBuilder 3500, Implementation Manual, Page: 526 / 592

526 C
HAPTER
18: D
EVICE
M
ONITORING
Roving Analysis
Roving analysis is the mirroring of Fast Ethernet, Gigabit Ethernet, or
Fiber Distributed Data Interface (FDDI) port traffic to another port of the
same media type. This second port has an external RMON-1/RMON-2
probe or analyzer attached such as the 3Com Transcend Enterprise
Monitor. Through the probe, you can monitor traffic on any switched
segment. Figure 95 shows a sample configuration.
■
The port with the analyzer attached is called the analyzer port .
■
The port that is being monitored is called the
monitor port
.
Figure 95 Connecting an Analyzer to the System
The purpose of roving analysis is to:
■
Analyze traffic loads on each segment so that you can continually
optimize your network loads by moving network segments.
■
Troubleshoot switched network problems (for example, to find out
why a particular segment has so much traffic).
When you set up a roving analysis configuration, the system copies both
transmit and receive port data and forwards it to the port on which the
network analyzer is attached — without disrupting the regular processing
of the packets.
LAN Analyzer
(port designated as analyzer port)
PC
(port designated as monitor port)
L3