Hi I have 6 ccr1036's in pairs of 2 LACP'ed to stacked Dell 8024F & 8132F switches.. These are about to be replaced with arista 7050sx switches in MLAG config. I have previously setup the CCr1036 as STP edge devices, so portfast and spanning tree disabled. But I have recently had 2 ccr's do death reboot cycles, crash and then reboot themselves in loops. This has cause lots of problems for my OSPF network :) I presume they have DR or BR at the times - unlucky me. I notice I with LACP there is RSTP turned on. Which got me thinking maybe I should have them configured on the switches as No portfast No span disabled And make them go through a spanning tree block , learn, forward states. Just wonder how others have their ccr's connection - especially if you have LACP connection Alex