Yes, Siva, I've allready checked these IP addresses. It doesn't work. Neither physical nor virtual. On sql server log it's said that one node listen to xx.xx.xx.x1 :1433 , other node- xx.xx.xx.x2:1424

These ports have been assigned dynamically.

When I try to connect from cluster node to outside SQL server by its IP address all works fine.

The connecting method using IP addresses doesn't work when I attemp to connect from outside to cluster nodes and inside the cluster between 2 nodes