Need help on Netbackup 6.5

Hi 

This is my first post in this forum also I am new to Netbackup admin role.

I need your help in troubleshooting netbackup client server 6.5 on Red Hat Enterprise Linux Server release 5.6 (Tikanga).

We have NBU master server 7.1.0.4 on AIX 6.5 but this client have only NBU 6.5 in it and also it seems we cannot upgrade the NBU client version.

I am having problem in connecting with this client, can you please let me know how to start the services on NBU 6.5. generally I use "netbackup start" and "netbackup stop" to bounce the services but not sure how to do it in NBU 6.5.

Can some one please help in this.