Make sure that a unique IP address is available in the IPoIB subnet used in the Oracle Big Data Appliance rack. Never reuse an IP address that is already assigned, or allocated for Big Data Appliance or other purposes in this subnet. To identify a unique and available IP address with associated subnet mask, refer to the Oracle Big Data Appliance configuration..
To identify IPoIB network information from an existing Oracle Big Data Appliance compute node, run the following command:
[root@bda10 ~]# egrep '(IPADDR|NETMASK|NETWORK|BROADCAST)' /etc/sysconfig/network-scripts/ifcfg-bondib0 IPADDR=192.168.41.10 NETMASK=255.255.248.0 NETWORK=192.168.40.0 BROADCAST=192.168.47.255
Using the information obtained, you can request for a free and unique IP address belonging to Oracle Big Data Appliance's IPoIB subnet.
To find out the CIDR prefix, run the ipcalc command as follows:
[root@bda10 ~]# ipcalc -p 192.168.41.10 255.255.248.0 PREFIX=21
Note that in the example, the possible IP address host range is from 192.168.40.1 to 192.168.47.254. In the following step, IP 192.168.44.100/21 will be used as an IP address for Exalytics' IPoIB bond0 interface.
Run the exalytics_configure_network.sh script on Exalytics as root. When prompted, configure the IPoIB (InfiniBand) network interface. It is a bonded interface named bond0 using ib0 and ib1.
[root@exalytics root]# /opt/exalytics/bin/exalytics_configure_network.sh Network Configuration Script Version exalytics-scripts-1.0.0.5ps3-52 Do you want to configure InfiniBand for Exadata connection? (y/n) [n]: y Enter bond0 IP address:192.168.44.100 Use 192.168.44.162 for bond0 ip address (y/n) [y]: Enter bond0 netmask address:255.255.248.0 Use 255.255.248.0 for bond0 netmask (y/n) [y]: