A better test would be to vlan out one of the ports on one of the nodes so that the layer 2 connection is still up, but the nodes can't communicate. This is on top of the normal pull the cable testing you describe. Thanks, Matt -- Matthew Zito Chief Scientist GridApp Systems P: 646-452-4090 mzito@xxxxxxxxxxx http://www.gridapp.com -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx on behalf of Ravi Gaur Sent: Tue 4/28/2009 11:03 AM To: oracle list Subject: IPMP testing on RAC cluster We are trying to run some tests to verify that our ipmp configuration in our RAC sandbox cluster works as desired. We've two nic cards for public and two for private and IPMP is configured for both. The plan is to physically plug them out (one at a time) and then plug them back in and ensure that everything works normally (ie no noticeable hiccups etc). Has anyone done this testing before and if so, are willing to share the test plan? Any queries/logs etc that might help. Here's some additional details if that helps -- 2 node RAC on Solaris 10 Oracle 10.2.0.4 Interfaces -- Public - bge0 and bge2; Private - bge1 and bge 3 TIA, - Ravi Gaur