Description This article describes techniques on how to identify, debug, and troubleshoot issues...
FortiSOAR Knowledge Base
dwivedis
Staff
Created on
Description
This article provides troubleshooting steps for Spanning Tree Protocol (STP) convergence issues between FortiSwitch and Cisco switches.
Scope
This applies to FortiSwitch devices.
Solution
Problem: STP con...
sachitdas_FTNT
Staff
Created on
Description
This article describes steps to take when the MCLAG-ICL interface shows a 'discarding' STP state.
ScopeManaged FortiSwitch version 7.2.x and above.Solution
Refer to the following topology:
Both the core1...
sachitdas_FTNT
Staff
Created on
DescriptionThis article describes spanning tree protocol (STP) behavior in LAG and MCLAG.ScopeFortiSwitch.Solution
LAGs and MCLAGs are often preferred for redundancy and higher performance.
From the STP perspective LAG...
pprince
Staff
Created on
Description
This article describes the best practices for MRP (Media Redundancy Protocol) configuration on FortiSwitches.
Refer to the document Fortiswitch/7.4.4/fortilink-guide for MRP configuration.
Refer to the do...
PaolGraz
Staff
Created on
Edited on
Troubleshooting Tip: Cisco switch portchannel in the ERR-DISABLE state when connected to MCLAG peers
Description
This article describes that by default, both MCLAG peers send BPDUs to the third-party switch connected via a LAG / portchannel.
The BPDUs frames are sent with different source MAC addresses (one for each M...
sachitdas_FTNT
Staff
Created on
Description
This article describes the steps to take when an inter-switch link shows STP discarding, but the expected behavior is the link should be in a 'forwarding state'.
ScopeFortiGate and Managed FortiSwitches versi...
sachitdas_FTNT
Staff
Created on
Edited on
Description
This article describes how to identify STP flaps in the network.
Scope
FortiGate version 7.x and above.
Managed FortiSwitches of version 7.x and above.
Solution
Check the logs below to identify STP flaps in t...
sachitdas_FTNT
Staff
Created on
Edited on
DescriptionThis article describes steps to configure separate ISL between 2 Managed FortiSwitch for data traffic.ScopeFortiGate and FortiSwitch 6.4.x and above.Solution
Sometimes, the requirement is to segregate data tra...
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