Hi Maninder,
Can you check if you are able to ping and telnet the server.
Also, here 1055 is not needed. Goto "C:\Program Files\ANSYS Inc\Shared Files\licensing" and in ansyslmd.ini file it should be
SERVERS=1055@@server1,1055@server2,1055@server3
ANSYSLI_SERVERS=2325@server1,2325@server2,2325@server3
