3.1 Changing the Interface Names

For systems with RoCE Network Fabric (X8M and later), BONDETH0 is used for the bonded Ethernet client network.

For later systems with InfiniBand Network Fabric (X3 to X8), BONDIB0 and BONDETH0 are typically used for the bonded RDMA Network Fabric and the bonded Ethernet client network, respectively.

For Oracle Exadata Database Machine X2-2 and earlier systems (with X4170 and X4275 servers), BOND0 and BOND1 are the names for the bonded RDMA Network Fabric and bonded Ethernet client networks, respectively.

If you are adding new servers to an existing Oracle Exadata, ensure the database servers use the same names for bonded configuration. You can either change the new database servers to match the existing server interface names, or change the existing server interface names and Oracle Cluster Registry (OCR) configuration to match the new servers.

Do the following after changing the interface names:

1. Edit the entries in /etc/sysctl.conf file on the database servers so that the entries for the RDMA Network Fabric match. The following is an example of the file entries before editing. One set of entries must be changed to match the other set.

   Found in X2 node
   
   net.ipv4.neigh.bondib0.locktime = 0
   net.ipv4.conf.bondib0.arp_ignore = 1
   net.ipv4.conf.bondib0.arp_accept = 1 
   net.ipv4.neigh.bondib0.base_reachable_time_ms = 10000
   net.ipv4.neigh.bondib0.delay_first_probe_time = 1
   
   Found in V2 node
   
   net.ipv4.conf.bond0.arp_accept=1
   net.ipv4.neigh.bond0.base_reachable_time_ms=10000
   net.ipv4.neigh.bond0.delay_first_probe_time=1
   

2. Save the changes to the sysctl.conf file.

3. Use the oifcfg utility to change the OCR configuration, if the new names differ from what is currently in OCR. The interface names for Oracle Exadata Storage Servers do not have to be changed.

4. Continue configuring the new hardware, as follows:

   • If the hardware is new servers, then go to Setting Up New Servers to configure the servers.

   • If the hardware is a new rack, then go to Setting up a New Rack to configure the rack.

See Also:

Oracle Exadata Database Machine Maintenance Guide for information about changing the RDMA Network Fabric information