| Description | This article describes the reason for the 'Redundant ISL' error on the FortiGate GUI. |
| Scope | FortiSwitch, FortiGate. |
| Solution |
In the FortiGate GUI, under Security Rating, a warning or error appears related to the Redundant ISL (Inter-Switch Link) for FortiSwitch.
This typically indicates that there must be redundant inter-switch links between all the FortiSwitches.
Once the redundant links are added to all the connected switches, the security rating will be set as passed.
Note: Starting from FortiOS v7.6.2, physical FortiGate devices with 2GB of RAM no longer support Security Rating. For more information, refer to the release note: 2 GB RAM FortiGate models no longer support Security Rating and Security Fabric topology | FortiGate... |
