IPMI Reverse Proxy

[De Paepe]

Building a cluster application, i wish to allow users to manage ipmi node's interfaces from the master machine by an Apache ProxyPass directives on a web application :

ProxyRequests Off
ProxyPass /manager-0-0/ http://manager-0-0/
ProxyPassReverse /manager-0-0/ http://manager-0-0/

After asking the BCM login/password, the page load but very very slowly and crash hasardly with a "Bad Gateway" error. Apache logs are not very explicit about them:

[Tue Jul 04 16:04:57 2006] [error] (111)Connection refused: proxy: HTTP: attempt to connect to 10.255.255.253:80 (manager-0-0) failed
[Tue Jul 04 16:05:00 2006] [error] (70007)The timeout specified has expired: proxy: HTTP: attempt to connect to 10.255.255.253:80 (manager-0-0) failed

Exactly same directives runs perfectly with my switch interface.
A "lynks http://login:pass@manager-0-0/" from the master works very fine and quickly.

Any idea from where my problem should come?

Thank you