Network Printer not getting configured.....

Hi

I am trying to configure network printer in SAP ECC6.0 which is running on HP-UX Cluster and Oracle.

When I enter the printer details, ip address host..etc...then after saving it turns red...

what is that I am missing in the configuration??

Is there any special setting required for printer configuration when SAP is on cluster??

Plzz let me know what needs to be done.....

Regards!