Technical Tip: Spanning tree in LAG and MCLAG

sachitdas_FTNT · 06-25-2025

Description This article describes the process of application debugging to determine when 802.1x authentication fails. Scope FortiSwitch 7.x and above. Solution Refer to the following configuration on the FortiSwitch port: edit "port5" set native-vla...

sachitdas_FTNT · 06-02-2025

What Is QoS? QoS (Quality of Service) refers to the ability of a network to provide different priority levels to different applications, users, or data flows, or to guarantee a certain level of performance. QoS helps ensure: Low latency for real-time...

sachitdas_FTNT · 04-25-2025

Description This article describes that one time, the STP root port flap was seen on a non-root bridge FortiSwitch after the STP root Bridge FortiSwitch rebooted. Scope FortiSwitch 1xx series, v7.4.x. Solution Consider the setup below: FortiSwitch1 i...

sachitdas_FTNT · 03-26-2025

Description This article describes how FortiSwitch behaves when multiple RADIUS servers are configured. Scope FortiSwitch 7.x and above. Solution For configuration steps for RADIUS Authentication on FortiSwitch, see Troubleshooting Tip: Configure and...

sachitdas_FTNT · 03-04-2025

Description This article describes the process and behavior of managed FortiSwitches when the FortiLink management VLAN is changed from the default VLAN 4094 to a customized VLAN. Scope Managed FortiSwitches and FortiGate version 7.2.x and above. Sol...

sachitdas_FTNT · 04-08-2025

Hi Kurt, I am assuming that you have given IP of 10.100.99.2 to the FortiSwitch's internal interface and not the SVI. In that case, when we connect 10.100.99.2 to FGT X2 interface 10.100.99.1, the traffic will flow as untagged vlan. Usually this shou...

sachitdas_FTNT · 02-18-2025

Hi Björnar, Currently we don't have the option to prioritize one link over another and configure a fallback scenario.

sachitdas_FTNT · 02-16-2025

Thats correct, p2p is not possible in this design. p2p means FGT-FSW-cisco-FSW.https://docs.fortinet.com/document/fortiswitch/7.6.1/fortilink-guide/801183/fortilink-over-a-point-to-point-layer-2-network Fortilink over layer3 is the correct approach.

sachitdas_FTNT · 02-16-2025

I tested in FSW version 7.4.4 against FortiGuest and it works fine. Have you tried configuring from FSW CLI? It could be a GUI issue where 'remote' option shows greyed out. Try upgrading FSW to the latest 7.4.6. my config FYI:- config system adminedi...

sachitdas_FTNT · 02-16-2025

Please refer this: https://docs.fortinet.com/document/fortiswitch/7.6.1/fortilink-guide/617516/determining-the-network-topology

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Troubleshooting Tip: 802.1x auth failing due to match condition

Understanding Quality of Service (QoS) in Networks – From Ethernet to FortiSwitch

Technical Tip: STP Behavior Observation Post Root Bridge Reboot FortiSwitch

Technical Tip: FortiSwitch 802.1x authentication behaviour when multiple authentication radius servers are configured

Troubleshooting Tip: Change FortiLink management vlan from 4094 to customized management VLAN

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Technical Tip: Spanning tree in LAG and MCLAG

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