Are you able to ping any of the MSA controller management IPs ?
If not then better to configure your Laptop in some IP and then connect cross cable to one of the management port of the Controller. Then send full broadcast IP 255.255.255.255. Then watch from which IP you are getting response that will be your controller management IP.
Otherwise connect Serial cable to MSA controller CLI port and try to access Controllers. Please find the links which will help you,
https://support.hpe.com/hpsc/doc/public/display?docId=emr_na-c03820027
https://support.hpe.com/hpsc/swd/public/detail?swItemId=MTX_f7441b0018c143ac88d83572e8
Hope this helps!
Regards
Subhajit
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