In-line Gigabit Ethernet ports can be configured as fail-open or fail-closed. The RJ-45 monitoring ports are built-in and include an built-in fail-open functionality as well. All other monitoring ports require the use of either Trellix's 4-port 1/10 Gigabit Modular Passive Fail-Open kit or external active fail-open (AFO) kits for In-Line Fail-Open Active configuration.
The 8-port SFP+ module and its monitoring ports require the use of external active fail-open for fail-open functionality.
Gigabit Ethernet ports fail-close, means the flow of traffic will stop if the Sensor fails. To allow traffic to flow uninterrupted, you must use special hardware, and cable the Sensor to external active fail-open kits. For instructions, see the subsequent sections of this chapter.
This section provides the steps to connect the Sensor's Gigabit Ethernet ports so they fail-close.
Plug the cable appropriate for use with your transceiver module into one of the Monitoring ports, for example G3/1.
Plug the cable appropriate for use with your transceiver module into one of the Monitoring ports, for example G3/2.
Connect the other end of each cable to the network devices that you want to monitor.
For example, if you plan to monitor traffic between a switch and a router, connect the cable connected to 1 to the router (3) and the one connected to 2 to the switch (4).