Rogue ONTs
A rogue ONT refers to an unauthorized or unapproved Optical Network Terminal connected to a passive optical network (PON) without the knowledge or permission of the service provider. It can occur due to unauthorized connections, fraudulent activity, or misconfiguration. Rogue ONTs pose risks such as network security vulnerabilities, degraded service quality, service abuse, and network instability. Service providers employ measures such as monitoring the network, authentication, and authorization processes, and remedial actions to address rogue ONTs.
How to Detect Rogue ONTs
The detection of rogue ONTs depends on the capabilities of the equipment used. The
When testing for rogue ONTs, the test set should be placed after the last splitter and right before the ONT to capture downstream information. The OLT will send messages to request ONTs to shut down if they are transmitting outside their time slot. The test set analyzes PLOAM messages, such as disable_SN or emergency_stop, sent from the OLT to the ONT to detect rogue activity. Upon multiple tests that were conducted to determine the time required for proper rogue detection, it was found that the unregistration and disabling of ONTs were instant, yet it could take up to 15 mins to reenable all except the rogue ONT.
On the FX120, press Tools, then Active ONU to detect ONUs. All ONUs that are not recognized will appear in gray. Refer to Advanced OPM Mode/Tools for more information on Advanced OPM Mode.
Rogue ONT Detection