Cisco Cisco FirePOWER Appliance 7125 Installation Guide

Version 5.3

Sourcefire 3D System Installation Guide

69

Installing a Sourcefire 3D System Appliance

Identifying the Sensing Interfaces

Chapter 3

You can use these connections to passively monitor up to eight separate network 

segments. You can also use paired interfaces in inline or inline with bypass mode 

to deploy the device as an intrusion prevention system on up to four networks.
If you want to take advantage of the device’s automatic bypass capability, you 

must connect either the two interfaces on the left or the two interfaces on the 

right to a network segment. Automatic bypass capability allows traffic to flow 

even if the device fails or loses power. After you cable the interfaces, you use the 

web interface to configure a pair of interfaces as an inline set and enable bypass 

mode on the inline set.

3D7110 and 3D7120 Fiber Interfaces

Eight-Port 1000BASE-SX Fiber Configurable Bypass 

The eight-port 1000BASE-SX fiber configurable bypass configuration uses LC-type 

(Local Connector) optical transceivers.
You can use these connections to passively monitor up to eight separate network 

segments. You can also use paired interfaces in inline or inline with bypass mode 

to deploy the device as an intrusion prevention system on up to four networks.

For best performance, use the interface sets consecutively. If you skip any 

interfaces, you may experience degraded performance.

If you want to take advantage of the device’s automatic bypass capability, you 

must connect either the two interfaces on the left or the two interfaces on the 

right to a network segment. Automatic bypass capability allows traffic to flow 

even if the device fails or loses power. After you cable the interfaces, you use the 

web interface to configure a pair of interfaces as an inline set and enable bypass 

mode on the inline set.

Sensing Interfaces

Link LED

Activity LED

Bypass LED