FortiLink Release Notes (FortiOS 7.6.0)
FortiSwitchOS 7.6.0
Introduction
This document provides the following information for FortiSwitch 7.6.0 devices managed by FortiOS 7.6.0 build 3401:
- Special notices on page 7
- Upgrade information on page 8
- Product integration and support on page 9
- Resolved issues on page 10
- Known issues on page 11
See the Fortinet Document Library for FortiSwitchOS documentation.
Refer to the FortiLink Compatibility table to find which FortiSwitchOS versions support which FortiOS versions.
FortiLink is not supported in transparent mode. [Information]
The maximum number of supported FortiSwitch units depends on the FortiGate model:
| FortiGate Model Range | Number of FortiSwitch Units Supported |
| FortiGate 40F, FortiGate-VM01 | 8 |
| FGR-60F, FG-60F, FGR-60F-3G4G, FG-61F, FG-70F, FG-71F, FG-80F, FG-80FB, FG-80FP, FG-81F, FG-81FP, FortiGate-VM02 | 24 |
| FortiGate 100F, 101F | 32 |
| FortiGate 200E, 201E, 200F, 201F, 800D, 900D, FortiGate-VM04 | 64 |
| FortiGate 300E to 500E, 400F, 401F | 72 |
| FortiGate 600E to 900E, 600F, 601F, 900G, 901G | 96 |
| FortiGate 1000D | 128 |
| FortiGate 1000F, 1001F, 1100E to 26xxF | 196 |
| FortiGate-3xxx and up and FortiGate-VM08 and up | 300 |
New models (NPI releases) might not support FortiLink. Contact Customer Service & Support to check support for FortiLink. [Information]
Special notices
Support of FortiLink features
Refer to the FortiSwitchOS feature matrix for details about the FortiLink features supported by each FortiSwitchOS model.
Upgrade information
FortiSwitchOS 7.6.0 supports upgrading from FortiSwitchOS 3.5.0 and later.
To determine a compatible FortiOS version, check the FortiLink Compatibility matrix.
Within the Security Fabric, the FortiSwitch upgrade is done after the FortiGate upgrade. Refer to the latest FortiOS Release Notes for the complete Security Fabric upgrade order.
Product integration and support
FortiSwitchOS 7.6.0 support
The following table lists FortiSwitchOS 7.6.0 product integration and support information.
| Web browser | FortiOS (FortiLink Support) |
| Microsoft Edge 112 |
|
| Mozilla Firefox version 113 | |
| Google Chrome version 113 |
Refer to the FortiLink Compatibility table to find which FortiSwitchOS versions support which FortiOS versions.
Resolved issues
The following issues have been fixed in FortiOS 7.6.0. For inquiries about a particular bug, please contact Customer Service & Support.
| Bug ID | Description |
| 688724 | Applying a nondefault LLDP profile to a switch port does not work. |
| 899414 | The WiFi & Switch Controller > FortiSwitch Clients page shows the incorrect status of the LACP interface. |
| 925554 | The Network > Interfaces page shows the incorrect status for the VLAN interfaces of hardware and software switches. |
| 944975 | The new value for the set vlan command is not shown in the output of the show switch-controller lldp-profile or the show full switch-controller lldp-profile voip command. |
| 960240 | After any setup changes, the inter-switch links are showing incorrectly as dotted on the Topology view of the WiFi & Switch Controller > Managed FortiSwitches page. |
| 965482, 968134 | The FortiGate 200F models have a lower performance when managing FS-6xxF switches in head-of-the- line (HOL) mode. |
| 984404 | After upgrading the FortiGate to FortiOS 7.4.2, the managed FortiSwitch unit is shown as “not registered" in the GUI. |
| 990409 | After upgrading FortiOS, the kernel operation is interrupted and restarts due to a switch command issue. |
| 991855 | The access-mode and storm-control policy commands are not visible in FortiGate clusters, and the FortiGate clusters do not send updated configurations to the FortiSwitch unit. |
| 995518 | When new firmware is available, the FortiGuard option is not available to upgrade on the WiFi & Switch Controller > Managed FortiSwitches > Upgrade page. |
| 1000663 | The configurations of managed-switch ports are being removed after the switch is restarted. This issue only affects user-created trunks. |
| 1003503 | The federated auto-firmware upgrade with FortiGate devices, FortiSwitch units, and FortiAP units needs to be optimized. |
| 1008049 | The I2C bus becomes stuck during an upgrade due to an error in the switch-config-init command. |
| 1023888 | The FortiGate GUI cannot be used to change the native and allowed VLANs on the WiFi & Switch Controller > FortiSwitch Ports page. |
| 1032105 | When a port is split on a managed switch, the FortiGate HA mode becomes unsynchronized. |
| 1033874 | The cu_acd application crashes with a signal 6. |
Known issues
The following known issues have been identified with FortiOS 7.6.0. For inquiries about a particular bug or to report a bug, please contact Fortinet Customer Service & Support.
| Bug ID | Description |
| 298348, 298994 | Enabling the hw-switch-ether-filter command on the FG-92D model (the default setting) causes FortiSwitch devices to not be discovered. |
| 520954 | When a "FortiLink mode over a layer-3 network" topology has been configured, the FortiGate GUI does not always display the complete network. |
| 527695 | Starting in FortiOS 6.4.0, VLAN optimization is enabled by default (set vlan-optimization enable under config switch-controller global). On a network running FortiSwitchOS earlier than 6.0.0, this change results in a synchronization error, but the network still functions normally. If you have FortiSwitchOS 6.0.x, you can upgrade to remove the synchronization error or disable VLAN optimization. On a network with set allowed-vlans-all enable configured (under config switch-controller vlan-policy), the setting reverts to the default, which is disabled, when upgrading to FortiOS 6.4.0. If you want to maintain the allowed-vlans-all behavior, you can restore it after the upgrade. |
| 586801 | NetBIOS stops working when proxy ARP is configured and the access VLAN is enabled because FortiGate units do not support NetBIOS proxy. |
| 621785 | user.nac-policy[].switch-scope might contain a data reference to switch-controller.managed-switch. When this reference is set by an admin, the admin needs to remove this reference before deleting the managed-switch. |
| 789914 |
|
| 813216 | After CAPWAP offload is enabled or disabled, FortiLink goes down. |
| 814674 | When upgrading a FortiAP or FortiSwitch unit that is connected to a downstream FortiGate device, a "Failed to retrieve upgrade progress" message appears. |
| 910962 | After setting values for src-mac, dst-mac, and vlan for the ACL classifier, you cannot use the unset command to remove these settings. WORKAROUND:
|
| 940248 | When both network device detection (config switch network-monitor settings) and the switch controller routing offload are enabled, the FS-1048E switch generates duplicate packets. |
| 961142 | An interface in FortiLink flaps when using an MCLAG with DAC on the OPSFPP-T-05-PEB transceiver. |
| 1042390 | The NAC policy cannot be saved when you are using a wildcard MAC address. |
| 1043815 | Upgrading the firmware for a large number (more than 100) of FortiSwitch units at the same time might cause performance issues with the GUI and some devices might not upgrade. Workaround: Upgrade the FortiSwitch units in smaller batches. |
| 1054445 | The GUI does not show changes in the dynamic port policy. |
