QFX to EX lacp not working

I am trying to connect several EX3300's to a QFX Virtual chassis. 2 links each 1 goes to one member of Virtual chassis then the other to the other member.

Connection works fine. But when I pull 1 traffic stops flowing on the other link as well. This isn't the behaviour I expected.

I have them configured as follows:

QFX:

set interfaces xe-0/0/1 ether-options 802.3ad ae1

set interfaces xe-1/0/1 ether-options 802.3ad ae1

show configuration interfaces ae1
aggregated-ether-options {
minimum-links 1;
lacp {
active;
periodic fast;
}
}
unit 0 {
family ethernet-switching {
interface-mode trunk;
vlan {
members all;
}
}
}

The EX:

set interfaces xe-0/1/0 ether-options 802.3ad ae0
set interfaces xe-0/1/1 ether-options 802.3ad ae0

description "LAG to 10gig core";
aggregated-ether-options {
minimum-links 1;
lacp {
active;
periodic fast;
}
}
unit 0 {
family ethernet-switching {
port-mode trunk;
vlan {
members all;
}
}
}

I added the minimum links later on thinking that had something to do with it. But it is supposed to default to that I believe.

Anyone see what I'm missing?