How to setup redundancy link between Fortiswitches ?

[plsikk]

Hello.

I need setup redundancy paths between FS but one link should be over fiber and second via WiFi bridge build on FAP (mesh config ROOT-LEAF). main problem is that fortilink over fiber is automatically formed but via APs I have to tenable p2p-fortilink. When both are configured all switches are going offline. Any change config p2p-fortilink on classic fortilink via fiber . Just to simulate two p2p-fortilinks. We really need find solution. Already did two links over mikrotik bridges but ofc MT are totally not visible for me and for fortiswitches. 

[Jean-Philippe_P]

Hello plsikk, 

Thank you for using the Community Forum. I will seek to get you an answer or help. We will reply to this thread with an update as soon as possible. 

Thanks, 

[Jean-Philippe_P]

Hello,

We are still looking for an answer to your question.

We will come back to you ASAP.

Thanks,

[Jean-Philippe_P]

Hello again,

I found this solution. Can you tell me if it helps, please?

To set up redundancy paths between FortiSwitches using both fiber and WiFi bridges with FortiAPs in a mesh configuration, ensure that FortiLink P2P is properly configured and that no traffic is blocked on the Layer 2 setup. Consider using MCLAG or STP for redundancy, and review the specific configuration settings for FortiLink and P2P-FortiLink to ensure compatibility.

[plsikk]

Hello

I tried Fortilink and P2P-Fortilink and when I connected fiber port all switches went down, so had to disconnect again to bring then online.

do you have any example of config. For classic fortilink is nothing to config because is formed automatically but for P2P via Wifi bridge I have configured over L2 now. But maybe config is not correct. All links are formed so I don't know what can be wrong.

[plsikk]

Any suggestion, ideas ?

[Jean-Philippe_P]

Hello again plsikk and sorry for the delay!

I found this solution to your question. Does it help? :)

To configure FortiLink over a point-to-point layer-2 network, especially when using a WiFi bridge, follow these steps:

1. Enable FortiLink P2P on Each FortiSwitch Unit:
   - Access the configuration for the physical port on each FortiSwitch unit that connects to the WiFi bridge.
   - Use the following commands: ```shell config switch physical-port edit <port_name> set fortilink-p2p enable end ```
   
   
2. Ensure Consistent TPID Values:
   - Make sure the FortiLink point-to-point TPID value is the same on each FortiSwitch unit. By default, it is 0x8100.
   - Use the following commands to verify or set the TPID: ```shell config switch global set fortilink-p2p-tpid <0x0001-0xfffe> end ```
   
   
3. Check Layer-2 Network Configuration: Ensure that the WiFi bridge and any intermediate Layer-2 devices are not blocking LLDP packets or any other necessary traffic for FortiLink.
   
   
4. Review Redundancy Protocols: If redundancy is required, consider using protocols like MCLAG or STP to manage the failover between the fiber and WiFi bridge links.
   
   
5. Troubleshoot Connectivity: If switches go offline when connecting the fiber port, check for any loops or misconfigurations in the network that might cause a broadcast storm or other issues.

By following these steps, you should be able to configure FortiLink over a WiFi bridge and troubleshoot any issues with the setup. If problems persist, further network analysis may be required to identify specific issues.

[plsikk]

Hi. today I got some time to check this setup and now it is something weird.

Already added copper link instead for fiber and this link is not forming trunk .

for test I enabled fortilink-p2p additionally on ports on both switches where copper is connected.

This is port config where FAP is connected

port config on switch

edit "port15"
set fortilink-p2p enable
set lldp-profile "default-auto-isl"

edit "port8"
set fortilink-p2p enable
set lldp-profile "default-auto-isl"
set poe-status disable
set speed auto
set storm-control-mode disabled
set speed auto
next

This is my setup

When I connect copper between port 15 on swc002 and port 7 on 0721 classic fortilink is not formed. and after few minutes switches going offline. When I remove copper - switches back to online 

When I setup fortilink-p2p on copper cable nothing happened  and the port 7 on switch 0721 joined to exist trunk but is not displayed on gui.

edit "_FlInK1_MLAG0_"
set auto-isl 1
set members "port8" "port7"
next

Already checked  port configs and like above. fortilink-p2p enabled on both sites.

No any other devices between