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Trunk to two separate switches?
A coworker steered me down the wrong path by saying I need to do this with a trunk and not selecting LACP. I did what you suggested nitass and removed the trunk and added 1.1 and 1.2 to External vlan.
With STP in pass-through I see Sw2 Gi1/0/6 in BLK. With STP enabled on the LB I see 1.1 in FWD and 1.2 in BLK.
During testing I found pass-through doesn't work so well, I shut down 1/6 on Sw1 and instead of Sw2 1/6 going to FWD it went to block loop inconsistent state for some reason, had to shut no shut interface for it to come up.
With LB mode set to STP I shut down Sw1 1/6, 1.1 went to BLK, 1.2 went to FWD, all was good. So in this type of setup STP is preferred vs pass-through.
Thanks for the advice nitass!
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