We have a dark fiber (span is 32km) and we have a juniper qfx1k-36q in side a and we have a qfx5200-32c in side b (in side b it is 2x qfx5200-32c virtual chassis) and light the dark fiber with flexoptix 100g bidi 40km and rx/tx light are in the range (rx light level is -4.6db and we add attenator and reduce it to -8 as well) the problem is when we configure this one interface as an lacp/AE the port start flaping but when we remove lacp and configure ip on it then it starts working perfectly, here is side a config:
run show configuration | display set | match ae1
set interfaces et-0/0/19 ether-options 802.3ad ae1
set interfaces ae1 description x
set interfaces ae1 aggregated-ether-options minimum-links 1
set interfaces ae1 aggregated-ether-options link-speed 100g
set interfaces ae1 aggregated-ether-options lacp active
set interfaces ae1 aggregated-ether-options lacp periodic fast
set interfaces ae1 unit 0 family inet address x/30
side b
run show configuration | display set | match ae12
set interfaces et-1/0/29 ether-options 802.3ad ae12
set interfaces ae12 aggregated-ether-options minimum-links 1
set interfaces ae12 aggregated-ether-options link-speed 100g
set interfaces ae12 aggregated-ether-options lacp passive
set interfaces ae12 aggregated-ether-options lacp periodic fast
set interfaces ae12 unit 0 family inet address x/30
i also checked the interface errors and when i configure lacp it is showing Carrier transitions.
qfk1k junos version is 23.4R1.9 flex qfx5200-32c junos is 23.4R2.13
any idea?