I have an 8024F with 4 gig ports in a LAG to a Cisco 6500. The configuration was working fine for several years, then the building was powered down for electrical work. When brought back up, two issues occurred:
1- unless 3 of the 4 LAG ports are disabled, some 6500 hosts aren't reachable from the 8024 ports; works fine with only one of four enabled.
2- lots (one per second) of spanning tree messages if more than one port is on in the LAG.
When all 4 ports are turned on, they seem to be passing traffic in both directions according to the packet counts, however, ssh sessions crossing the LAG (seem) to be slow in echoing characters sometimes and pings fail for some hosts over long periods of time - but not always.
Undoubtedly, one or both of the running configs wasn't saved, but the central IT folks claim the 6500 is set up as it was, and I've stared at the my 8024 configs without inspiration. Most of the settings in the 8024 are the defaults.