Yep, as you found out the hard way crossover cables aren't supported. Too many problems that magically disappear when you switch to a switch (if you get what I mean!) Pete "Controlling developers is like herding cats." Kevin Loney, Oracle DBA Handbook "Oh no, it's not. It's much harder than that!" Bruce Pihlamae, long-term Oracle DBA -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Yechiel Adar Sent: Wednesday, 23 November 2005 1:11 AM Cc: oracle-l@xxxxxxxxxxxxx Subject: Re: Dell-Oracle-Linux: Anyone else run this...because its not working for us! We had a two servers rac that went down. The tar result was: Use switch for interconnet and do not use cross-over network cable. Adar Yechiel Rechovot, Israel Mark Brinsmead wrote: > I've never experience this myself, but I do know that running a > two-node cluster with ethernet cross-over cables for the interconnect > network can cause the entire cluster to fail when one node crashes. > You must use a hub/switch for the interconnect networks (in production > anyway). And of course, to avoid single-points-of-failure, you should > use a separate switch for each network. > > -- http://www.freelists.org/webpage/oracle-l -- http://www.freelists.org/webpage/oracle-l