Discovering nodes using OEM

Hi.
Am using oracle 9i R2 enteprise manager on windows and would like to adminster other databases in my network. When connected to the OEM standard alone console, there is no pb. when when connected to the management server, when I want to discover a node, it fails with this error. "Discovert Failed:VNI-4044: Cannot contact agent. Node may be down or the network may be down or slow."
When discovering the node, I use the machine name or ip (oracle 9i R2 is installed and its running under solaris) and on the remote site, the agent is running!! Is there anything to be done so that the node can be discovered automaticaly as when discovered manaually, can't scheduled for jobs, backups and all the rest.
Any help will be appreacited.
Mirdassou

Have you looked the vni-4044 error up on metalink? There is a step by step trouble shoot guide for this error. The standalone connections are totally different to the node discovery process so you cannot compare them.
Have a look on metalink get that document, make sure your agent is ok, and if you can't tnsping the ports (1848 & 1854 from oms server to agent server, 7772 from agent server to oms server) then look at what firewalls you have.
Bazza

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From what I've read in this forum and in others is
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files. However I've tried the posted solutions by
changing the owner/permissions as suggested, but this
does not help. I get the same error regardless if the
files are owned by oracle or by root.
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