In-line monitoring of 10 gigabit links – Net Optics Smart Filtering none User Manual
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Director
In-line Monitoring of 10 Gigabit Links
To create an in-line link on a 10 Gigabit network segment, use and external iBypass Switch or network Tap. These two
methods are explained in the following sections.
iBypass Switch Method
One method for creating a fail-safe, passive in-line 10 Gigabit network connection with Director is to use an external
iBypass Switch, as shown in the following diagram.
Director
Router
Switch
Monitoring tools
10 Gbps
full duplex
iBypass Switch
Purple arrows show traffic
flow in one direction
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1
2
B
A
A
B
ON
OFF
iBypass Switch method for 10 Gigabit in-line network connection
Figure 4:
In this case, traffic flows from the router, into the iBypass Switch, down to the Director, through Director, back up to
the iBypass Switch, and finally to the switch. It also travels in the opposite direction. If power is removed from Direc-
tor or from the iBypass Switch, the iBypass Switch fails open, creating a passive connection that keeps traffic flowing
between the router and the switch.
External Network Tap method
Another method for creating a fail-safe, passive in-line 10 Gigabit network connection with Director is to use an
external network Tap, as shown in the following diagram.
Director
LC Fiber Tap
Router
Switch
Monitoring tools
10 Gbps
10 Gbps
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A
B
External Tap method for
Figure 5:
10 Gigabit in-line network connection
In this case, traffic flows from the router, through the external Tap, to the switch. The Tap is totally passive, with no
power needed for its operation. Optical splitters send a portion of the link light to the Director for monitoring. The Tap
produces two half-duplex data streams, so both of Director's 10 Gigabit ports are used to monitor full-duplex traffic.
A
10 GigaBit Port Aggregator can be used instead of a Tap to send the full-duplex link traffic to a single Director 10 Gigabit
port, assuming the aggregated full-duplex traffic is 10 Gbps or less.