Interlogix TruVision NVR 10 Connecting an External Switch to the PoE Ports Guide - Manual (Page 2)

Connecting an external switch to the TVN 10 PoE ports 2 / 2
6. Manually add a dummy address for any unused channels. Do not leave any
open channels on the TVN 10.
Caution: Failure to do this will cause all the TruVision cameras on the
external switch to be readdressed to a single IP address by the TVN 10.
7. Connect the external switch into the TVN 10 PoE switch. All of the cameras
should come online and start streaming video to the TVN 10.