Have had some issues with configuring a DHCP server with redundant ethernet on a SRX345 Cluster.

{primary:node0}

root> monitor traffic interface reth5 no-resolve

BIOCSETIF: reth5: Network is down

{primary:node0}

root> show interfaces terse | match reth5

ge-0/0/5.0       up  up  aenet  --> reth5.0

ge-0/0/5.32767     up  up  aenet  --> reth5.32767

ge-5/0/5.0       up  up  aenet  --> reth5.0

ge-5/0/5.32767     up  up  aenet  --> reth5.32767

reth5          up  down

reth5.0         up  down inet   X.X.X.X/24

reth5.32767       up  down

I checked reth count on cluster which shows both nodes as 10. 

Once interface was up L2 error channels were increasing.

After removing the LACP feature, the interface reth5 is up up.

The attached switch is unmanageable - Implement VLAN tagging.