[INS-41107] The interface (eth1) chosen as Public or Private is not on a shared subnet. Nodes not defining are: [rac2]

Network interface subnet are not same for both the RAC nodes

Cause – The Public or Private interface on the nodes indicated are on a different subnet than the ones used on other nodes.
Action – Ensure that the specified Public or Private interface share the same subnet across the nodes.

NODE 1:

[root@rac1 oracle]# ifconfig

eth1      Link encap:Ethernet  HWaddr 08:00:27:80:C4:46
   -----> inet addr:192.168.57.110  <-------  Bcast:192.168.57.255  Mask:255.255.255.0
          inet6 addr: fe80::a00:27ff:fe80:c446/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:824 errors:0 dropped:0 overruns:0 frame:0
          TX packets:77 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:185320 (180.9 KiB)  TX bytes:13507 (13.1 KiB)

NODE 2:

[oracle@rac2 ~]$ ifconfig


eth2      Link encap:Ethernet  HWaddr 08:00:27:71:E8:1A
         -----> inet addr:192.168.56.194 <------- Bcast:192.168.56.255  Mask:255.255.255.0
          inet6 addr: fe80::a00:27ff:fe71:e81a/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:71 errors:0 dropped:0 overruns:0 frame:0
          TX packets:51 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:12448 (12.1 KiB)  TX bytes:15858 (15.4 KiB)

Solution:

Contact your network admin

identify the mac address of both nodes nic interface card

configure the ethernet interface to the same subnet!

Reconfigure ipaddress for nodes

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