SnapCenter Server 4.X
Backup are failing with connection error , the following can be found in the logs
2020-11-23T06:15:03.5570130+01:00 ERROR SnapManagerWeb_113062 PID= TID= Exception in method: InvokeXML.
System.Net.WebException: Unable to connect to the remote server ---> System.Net.Sockets.SocketException: An operation on a socket could not be performed because the system lacked sufficient buffer space or because a queue was full 10.1.1.1:8145
at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)
at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Exception& exception)