bp.start_all isn't used by clients, just servers. You shouldn't see any processes on a 6.x UNIX client unless a backup is in process.
A better check is to see if your client is listening on the expected ports. Try `netstat -an | grep LISTEN | grep 137` and see if vnetd (13720) and bpcd (13782) are included in the output.
# netstat -an | grep LISTEN | grep 137
*.13785 *.* 0 0 49152 0 LISTEN
*.13720 *.* 0 0 49152 0 LISTEN
*.13701 *.* 0 0 49152 0 LISTEN
*.13721 *.* 0 0 49152 0 LISTEN
*.13782 *.* 0 0 49152 0 LISTEN
*.13723 *.* 0 0 49152 0 LISTEN
*.13724 *.* 0 0 49152 0 LISTEN
Assuming you find listening ports, next step is to try to connect to them You can try a telnet from the master, a bptestbpcd test, or run some bpclntcmd commands.