SAN Client backups are getting hung happening over FT media server

Hi All,

My SAN Client backup jobs over Fiber are getting hung and when I cancel it and restart the job manually backup goes fine over fiber transport.The back job will be active for hours and write nothing and when I cancel & restart it will go fine.Also noticed my backups some time  fail over to LAN rather than FT, it suppose to be FT as SAN Client has been configured.

My master is Solaris10, FT media server is Solaris 10, Clients are Windows 2008.

Netbackup version on all the servers is 7.6.1.1.

Please provide your thoughts on this.

Regards,

Reddy