https://community.extremenetworks.com/t5/extremeswitching-exos-switch/stack-splibrain-protection/m-p/22033#M1741 If you have a split brain situation these slots 100% believe the other slot is down.&nbsp; I don't know of a way on the stack to detect a split brain.&nbsp; You could have a script disable OSPF/MPLS if the other node goes down.&nbsp; If it's a true node down and not a <SPAN>split brain you will have a outage when you wouldn't normally.<BR /><BR />You would have to detect both a Dup IP and MAC to do it.&nbsp;<BR /><BR /><BR /></SPAN> Fri, 15 Jul 2022 20:22:00 GMT StephenW 2022-07-15T20:22:00Z https://community.extremenetworks.com/t5/extremeswitching-exos-switch/stack-splibrain-protection/m-p/22032#M1740 Hi<BR /><BR />Does anybody know how protect rest of then network with protocol OSFP/MPLS when the stack is broken and we have a split brain situation with two master? It's possible to automaticaly somehow down master IN/OUT interface on one node or something else ? We use the X590- Switches with EXOS 31.7.1.4-patch1-17 EXOS<BR /><BR />BR&nbsp;<BR /><BR />Pawel Mon, 11 Jul 2022 20:41:00 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/stack-splibrain-protection/m-p/22032#M1740 pbrzostowski 2022-07-11T20:41:00Z https://community.extremenetworks.com/t5/extremeswitching-exos-switch/stack-splibrain-protection/m-p/22033#M1741 If you have a split brain situation these slots 100% believe the other slot is down.&nbsp; I don't know of a way on the stack to detect a split brain.&nbsp; You could have a script disable OSPF/MPLS if the other node goes down.&nbsp; If it's a true node down and not a <SPAN>split brain you will have a outage when you wouldn't normally.<BR /><BR />You would have to detect both a Dup IP and MAC to do it.&nbsp;<BR /><BR /><BR /></SPAN> Fri, 15 Jul 2022 20:22:00 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/stack-splibrain-protection/m-p/22033#M1741 StephenW 2022-07-15T20:22:00Z