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

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 

martin.klier_at_performing-db.com | https://www.performing-databases.com 



> Von: "Sanjay Mishra" <dmarc-noreply_at_freelists.org>

> An: "Oracle-L Freelists" <oracle-l_at_freelists.org>

> Gesendet: Montag, 21. August 2017 19:04:28


> Betreff: Oracle RAC multiple Nic for Private network vs interconnect bonding





> Hi




> 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 11

> g Release 2 (11.2.0.2). 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





> TIA

> Sanjay



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