I am trying to LAG 2 Fortiswitches using Fiber. The issue I am having is when I set the lldp-profile to default-auto-mclag-icl, it acts like it accepts it, but then a few minutes later it reverts back to default-auto-isl. Why is this happening? the 248E switches are LAG capable. Below is a pic of my port config.
 
Have you configured the same on second switch as well.
Correct, both sides are configured the same.
| User | Count |
|---|---|
| 2117 | |
| 1187 | |
| 770 | |
| 451 | |
| 344 |
The Fortinet Security Fabric brings together the concepts of convergence and consolidation to provide comprehensive cybersecurity protection for all users, devices, and applications and across all network edges.
Copyright 2025 Fortinet, Inc. All Rights Reserved.
