You are talking to the network admin team about the Interconnect network in Oracle RAC and
Clusterware.
Which statement about the Private interconnect interface is incorrect?
A.
Oracle RAC and Oracle ASM instances use the private interconnect for inter-instance
communication.
B.
Oracle Clusterware uses the private interconnect to exchange Clusterware-related messages
among its nodes.
C.
It supports both IPv4 and IPv6.
D.
It supports redundant network interfaces for load balancing and high availability.
D >>>
When you define multiple interfaces, Oracle Clusterware creates from one to four highly available IP (HAIP) addresses. Oracle RAC and Oracle Automatic Storage Management (Oracle ASM) instances use these interface addresses to ensure highly available, load-balanced interface communication between nodes. The installer enables Redundant Interconnect Usage to provide a high availability private network.
By default, Oracle Grid Infrastructure software uses all of the HAIP addresses for private network communication, providing load-balancing across the set of interfaces you identify for the private network. If a private interconnect interface fails or become non-communicative, then Oracle Clusterware transparently moves the corresponding HAIP address to one of the remaining functional interfaces.
==================
If you use the Oracle Clusterware Redundant Interconnect feature, then you must use IPv4 addresses for the interfaces.
================
For the public network, each network adapter must support TCP/IP.
For the private network, the interface must support the user datagram protocol (UDP) using high-speed network adapters and switches that support TCP/IP (minimum requirement 1 Gigabit Ethernet).
===============
Redundant Interconnect Usage requires a complete Oracle Grid Infrastructure and Oracle Database Release 2 (11.2.0.2) or higher stack. Earlier release Oracle Databases cannot use this feature, and must use third-party NIC bonding technologies. If you consolidate different database releases in one cluster, and use databases before Oracle Database 11g Release 2 (11.2.0.2), then you may require both technologies.
===============
Oracle Grid Infrastructure and Oracle RAC support the standard IPv6 address .
Configuring private IP interfaces (interconnects): you must configure the private network as an IPv4 network. IPv6 addresses are not supported for the interconnect.
============
The rp_filter values set the Reverse Path filter to no filtering (0), to strict filtering (1), or to loose filtering (2). Set the rp_filter value for the private interconnects to either 0 or 2. Setting the private interconnect NIC to 1 can cause connection issues on the private interconnect. It is not considered unsafe to disable or relax this filtering, because the private interconnect should be on a private and isolated network.
Correction in Answer :
C is FALSE so it is ans of this question.
Private network must be configured as an IPv4 network.
IPv6 are not supported for interconnect.