We have currently started implementation of the critical VLAN and have created the VN on DNA and have the SGT created on ISE but a scenario came up when we started testing and that is how the critical VLAN is going to work in an extreme situation where our 3 ISE nodes where to go down and the SGT can not be pulled. I may not fully understand how the critical VLAN works or if anyone has more insight on what I am trying to relay,