FortiGate Next Generation Firewall utilizes purpose-built security processors and threat intelligence security services from FortiGuard labs to deliver top-rated protection and high performance, including encrypted traffic.
This article describes how to troubleshoot malfunctioning or flapping optical modules.
Scope
Any FortiGates using optical fiber module.
Solution
In case of a flapping interface or low level of power for optical fiber modules like SFP or qSFP, those verification steps should be considered to improve the situation:
