4.9.2 Changing InfiniBand IP Addresses and Host Names
It may be necessary to change the InfiniBand network information on an existing Oracle Exadata Rack. The change may be needed to support a media server with multiple InfiniBand cards, or keep InfiniBand traffic on a distinct InfiniBand network such as having production, test and QA environments in the same rack.
All InfiniBand addresses must be in the same subnet, with a minimum subnet mask of 255.255.240.0 (or /20). The subnet mask chosen should be wide enough to accommodate possible future expansion of the Oracle Exadata Rack and InfiniBand network.
Note:
It is not recommended to use SDP over InfiniBand on Exadata Database Machine.Parent topic: Modifying the InfiniBand Network Fabric Configuration