I have a two node NLB cluster configured. It all seems to be working fine (I can see requests being directed to both nodes) but soon after config is completed and convergence has taken place I get "host unreachable" errors in NLB manager on both nodes and I can no longer control a remote node in the cluster.
If I turn off the Windows firewall on both nodes in the cluster the errors stop and I can resume controlling remote nodes. This is strange as I have all the automatically created NLB firewall rules present (see below).
Unless I disable the firewalls this is stopping me from taking a node into "drainstop"
Anyone know what firewall rule I need to add to fix this?
Hibs Ya Bass!