Agilent Technologies 622Vu Advisor, User Manual

Page: 61 / 244

4.1 Configuring the Operation Mode
At any point in time, each analysis device can run as either an end station or a
monitor-only station:
•
An end station is known across the network, and can send and receive data.
In this mode, 622Vu Advisor lets you monitor traffic coming in on either of
the analysis device’s two channels; you select the channel you want.
•
A monitor-only station examines network traffic passively, without being
recognized across the network. In this mode, 622Vu Advisor automatically
monitors the traffic coming in both channels, and retransmits traffic over the
opposite channel from where it’s received. (Incoming on Channel 1 goes out
over Channel 2; incoming on Channel 2 goes out over Channel 1.)
Note: There’s no loss of signal strength if you elect to monitor traffic; the analysis device
recovers the data stream, removes any jitter, then retransmits the signal.
The right-most LEDs on the 622Vu undercradle indicate the current operation
mode:
Figure 2. LEDs Indicating Current Operation Mode
Use the Operation Mode tab to establish the settings you want.
Setting Up an End Station
With an end station analysis device, you can monitor traffic coming in on either
(one) of the analysis device’s two channels. All outgoing traffic is transmitted
over that same (receive) channel. When setting up an analysis device to run as an
end station, the configuration window includes a Channel selection and (as
appropriate to the interface type in use) a Clock Source area:
Power
Sys
OK
Fault
Active Port 1 Port 2
OC-12c/STM-4c
622 Mb/s SM
Port 1 Port 2
In Out
In Out
Device is operating in end-station mode when
the top indicator is lit, and in monitor-only mode
when the bottom indicator is lit.
4: Configuring Analysis Devices
4.1 Configuring the Operation Mode
61