problem with HA monitored interface configuration for LACP interface

[asda]

Technical Tip: Best practice HA monitored interface configuration for LACP interface that is used fo...

I had already seen this tip,and my device is fortigate 3240c，v5.4.10,build1220,180821 (GA)

I created two lacp groups.

port1 port2 port3 port4 for mgmt-channel and port5 port6 port7 port8 for inside-channel

But when i tried to config like the tip,It failed.

How can i monitor independent each ports,if this configuration is truely couldn'd be add.

Please give some advice,thank you very much.

my ha configuration,and i show which port i can add

my ha configuration,and show which port could be add,there is no port1-port8

the error

 

[AEK]

You should be able to monitor independent interfaces this way:

set monitor port5 port6 port7 port8

However I think you shouldn't monitor theses interfaces, since if you have one interface down the link still work and you will have unnecessary node failover.

So usually when I have LACP I don't monitor it, since it is LACP and it's quite unlikely to fail, especially when it is connected with multi-chassis.

[asda]

Hi AEK：

I have tried in this way,also can't be able.

And I monitor the individual interface because there is a bandwidth requirement. After the port is down, HA can switch to ensure stable bandwidth

[darisandy]

It's also possible that this is because of the FortiOS version.

The KB article was written last year, 2022

But FortiOS version 5.4 is quite old, it was released on 2015

[asda]

Hi darisandy:

Is there any way without this artical that can monitor each port when the port down,the ha status will change.

thank you

[darisandy]

Based on the available command you shared, I don't think it's possible.

Once the ports are member of LACP interface, most likely that older version can't refer to the physical port anymore.

[AEK]

Hi Asda

Otherwise try using automation stitches. It should be doable.

[asda]

It seems that my version does not support automation stitches🥲

But also thank for your advice.