I have a FortiGate 100D + HP ProCurve 2824 linked together by 4x 1Gb links.
The ProCurve is configured to have ports 21-24 trunked together and load balance them.
The 4 cables from these ports are then fed into the 100D on ports 1-4 which are configured as a software switch (which should mean all 4 interfaces have the same IP address).
However when I connect the 4 links to the 100D the 100D itself becomes unaccessable but the network continues to function (the ProCurve must be using it's internal table to direct traffic) and there is no flood of packets as there would be in a network loop.
Has anyone ever run this kind of config on a FortiGate?
I'm convinced it's the FG end as the ProCurve is basically stock.