Oracle EXADATA X6-2 Installation And Configuration Manual page 91

Note:
If your system will use more than 10 VIP addresses in the cluster and you
have VLAN configured for the Oracle Clusterware client network, then you
must use 3 digit VLAN ids. Do not use 4 digit VLAN ids because the VLAN
name can exceed the 15 character operating system interface name limit.
• Additional networks (optional): Database servers can connect to additional
existing networks using the available open ports not used by the management and
client networks.
• InfiniBand private network: This network connects the database servers and
Oracle Exadata Storage Servers using the InfiniBand switches on the rack.
Starting with the Oracle Exadata Storage X4-2L servers, the InfiniBand fabric is
connected using the IB0 and IB1 interfaces. Oracle Exadata Storage Server X3-2L
servers and earlier use the BONDIB0 interface. Oracle Database uses this
network for Oracle RAC cluster interconnect traffic and for accessing data on
Oracle Exadata Storage Servers. This non-routable network is fully contained in
Oracle Exadata Database Machine, and does not connect to your existing
network. This network is automatically configured during installation.
Note:
All networks must be on distinct and separate subnets from each other. For
better security, the management network should be isolated from all other
networks.
Oracle Exadata Database Machine database server networking requirements are
identical with the following exceptions:
• Oracle Exadata Database Machine X7-2 embedded ports are 1/10/25 GbE.
• Oracle Exadata Database Machine X6-2, Oracle Exadata Database Machine
X5-2, Oracle Exadata Database Machine X4-2, and Oracle Exadata Database
Machine X3-2 embedded ports are 1 GbE/10 GbE.
• Oracle Exadata Database Machine X2-2 embedded ports are 1 GbE.
• Only Oracle Exadata Database Machine X2-2 has a KVM.
At start time on an 8-socket system, each database server generates a
configuration file. The
cellaffinity.ora
oracle/cell/network-config directory, and must be readable by the Oracle
database.
The file contains a mapping between the NUMA node numbers and the IP address of
the network interface card closest to each node. Oracle Database uses the file to
select the closest network interface card when communicating with Exadata Storage
Servers, thereby optimizing performance. This file is only generated and used on an 8-
socket system. On a 2-socket system, there is no performance to be gained in this
manner, and no
cellaffinity.ora
a text editor.
The following image shows the default network diagram for Oracle Exadata Database
Machine X7-2. Use the files from Oracle Exadata Database Machine Deployment
Overview of Network Requirements
a file resides in the /etc/
cellaffinity.or
file. The file is not intended to be directly edited with
Chapter 2
2-3