Using A Port Mirror For Analysis - Enterasys Vertical Horizon VH-2402S Web Management Manual

Using a Port Mirror for Analysis

You can mirror traffic from any source port to a target port for real-time
analysis. You can then attach a logic analyzer or RMON probe to the
target port and study the traffic crossing the source port in a completely
unobtrusive manner. When mirroring port traffic, note that the target port
must be configured in the same VLAN and be operating at the same
speed as the source port (see VLAN Static List on page 33). If the target
port is operating at a lower speed, the source port will be forced to drop
its operating speed to match that of the target port.
You can use the port mirror configuration screen to designate a single
RJ-45 port pair for mirroring as shown below:
Parameter
Status
Mirror Source Unit
Mirror Source Port
Mirror Target Unit
Mirror Target Port
9033821
Figure 3-43. Mirror Port Configuration
Description
Enables/disables port mirroring.
The switch containing the mirror source port.
The port whose traffic will be monitored.
The switch containing the mirror target port.
The port that will duplicate or "mirror" all the traffic happening on
the monitored port.
Configuring and Monitoring the Switch 49