Re: Oracle RAC multiple Nic for Private network vs interconnect bonding

From: Sanjay Mishra <"Sanjay>
Date: Tue, 22 Aug 2017 20:39:55 +0000 (UTC)
Message-ID: <>

Thanks Martin for your update.

    On Tuesday, August 22, 2017 9:49 AM, Martin Klier - Performing Databases GmbH <> wrote:  

 Hi Sanjay,
I have good experience with HAIP, too. Usually it causes less discussions w/ sysadmins and network staff, and is less prone to missing switchovers due to misconfigured bonding methods (or mis-coordinated ones, speaking of switch and bond configs).  Important, as Stefan already pointed out, use seperate networks for each "channel". But as I know from my current RAC project, just a little subnetting on your interfaces will do, don't mess with the sleeping network lions...

Martin Klier | Performing Databases GmbH
Managing Partner | Senior DB Consultant
Oracle ACE |

Von: "Sanjay Mishra" <>
An: "Oracle-L Freelists" <>
Gesendet: Montag, 21. August 2017 19:04:28
Betreff: Oracle RAC multiple Nic for Private network vs interconnect bonding

Can someone share his experience in using multiple NIC for Private network and therby focing Oracle to use multiple HAIP vs interconnect bonding. I had RAC setup where OS level Private network Bonding is not failing over due to one issue on NIC and causing Oracle cluster to bounce the node. This happen several time and so checking Oracle Docs that says that 11g(11.2) onwards it is recommended to use multiple nic and details from DOc is
"With Redundant Interconnect Usage, you can identify multiple interfaces to use for the cluster private network, without the need of using bonding or other technologies. This functionality is available starting with Oracle Database 11g Release 2 ( If you use the Oracle Clusterware Redundant Interconnect feature, then you must use IPv4 addresses for the interfaces.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." 
So want to check is someone is using and share the experience

Received on Tue Aug 22 2017 - 22:39:55 CEST

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