Recently we noticed that we are unable to ping one of the Fabric Interconnects after changing the IP’s of both the Fabric Interconnects and Virtual IP.  After much troubleshooting we found that if we are changing the IP of Fabric Interconnects to a different VLAN/Subnet from the previous one then we also need to change the KVM IP’s to the same VLAN as of Fabric Interconnects. Once we changed the KVM IP’s to the same VLAN as of Fabric Interconnects we were able to ping both the FI’s.