Re: New FG1000D HA Deployment Using Nexus VPC Troubleshooting
FWIW if you have a VPC a and peer-link up than LACP should work. You could disable LACP all together and see what happens but I would look at the LACP statistics from the NXOS side of things and go from that point forward. If the LCAP packets are not being sent/receive from the FGT or NXOS devices, than trouble shoot as to why.
show lacp counter
show lacp neighbor
PCNSE, NSE , Forcepoint , StrongSwan Specialist