Node IP drops

i have simple 2 node file server cluster setup, in dmz environment , servers have multiple nics, internal ip, external ip, , heartbeat ip.  file server uses internal network.  problem having when go move file server resource or shut down, take internal network ip down well.  ideas cause?

i fixed own problem, had way have configure ip's in dmz.  essentially, have 2 networks, 1 external interet traffic , 1 dmz traffic.  external nic gateway assigned , internal has no gateway , use persistent routes traffic.  pair of servers did not need talk on external network, removed gw nics , put 1 in on internal network, cluster works now, no longer have reboot server when move resource or take resource offline.

Windows Server  >  High Availability (Clustering)