Re: Differentiate between VIP,Public IP and Private IP

From: Dan Norris <dannorris_at_dannorris.com>
Date: Thu, 30 Jul 2009 10:00:46 -0500
Message-ID: <bc04324b0907300800pe0d6b88v65cb99fca37b2ce_at_mail.gmail.com>

If you just get a list of IP addresses with no other DNS records to indicate which is which, you can use any of them for the VIP. In that sense, they are interchangable. Once you choose which ones are the VIP and which are the public IPs, those decisions are set in stone and cannot be changed.

That's what I meant. Hope it didn't confuse anyone.

Dan

On Thu, Jul 30, 2009 at 9:42 AM, Bradd Piontek <piontekdd_at_gmail.com> wrote:

> They definitely are not interchangeable. The VIP is going to flip between
> nodes and is managed by the clusterware. Did the SYSADMIN set up
> /etc/hosts for you? I'd check there first as that's where you should put
> all
> IP
> VIP
> PRIvate entriees on every node
>
> nslookup should help you resolve which is the IP and which is the VIP. You
> could always ask the system administrator.
>
> Bradd Piontek
> "Next to doing a good job yourself,
> the greatest joy is in having someone
> else do a first-class job under your
> direction."
> -- William Feather
>
>
>
> On Thu, Jul 30, 2009 at 4:14 AM, hrishy <hrishys_at_yahoo.co.uk> wrote:
>
>> Hi
>>
>> Any way to differentiate betwen VIP and Public IP or they are
>> interchangeable
>>
>> regards
>> Hrishy
>>
>>
>> --- On *Thu, 30/7/09, LS Cheng <exriscer_at_gmail.com>* wrote:
>>
>>
>> From: LS Cheng <exriscer_at_gmail.com>
>> Subject: Re: Differentiate between VIP,Public IP and Private IP
>> To: "hrishy" <hrishys_at_yahoo.co.uk>
>> Cc: oracle-l_at_freelists.org
>> Date: Thursday, 30 July, 2009, 10:02 AM
>>
>>
>> Hi
>>
>> VIP and PUBLIC IP must be in same network so that might give you a hint
>>
>> Private IP should be something like 192.168.*.* or 10.*.*.*
>>
>>
>> Thanks
>>
>> --
>> LSC
>>
>>
>>
>> On Thu, Jul 30, 2009 at 11:00 AM, hrishy <hrishys_at_yahoo.co.uk<http://uk.mc237.mail.yahoo.com/mc/compose?to=hrishys_at_yahoo.co.uk>
>> > wrote:
>>
>>> Hi
>>>
>>> Apologies for not wording the question properly.
>>>
>>> When the sysadmins gives me a bunch of IP's they are just numbers
>>> seperated by dots.How would i know i need to use this number for VIP this
>>> number for public IP and this number for private interconnect.
>>>
>>> regards
>>> Hrishy
>>>
>>>
>>>
>>> --- On *Thu, 30/7/09, LS Cheng <exriscer_at_gmail.com<http://uk.mc237.mail.yahoo.com/mc/compose?to=exriscer_at_gmail.com>
>>> >* wrote:
>>>
>>>
>>> From: LS Cheng <exriscer_at_gmail.com<http://uk.mc237.mail.yahoo.com/mc/compose?to=exriscer_at_gmail.com>
>>> >
>>> Subject: Re: Differentiate between VIP,Public IP and Private IP
>>> To: hrishys_at_yahoo.co.uk<http://uk.mc237.mail.yahoo.com/mc/compose?to=hrishys_at_yahoo.co.uk>
>>> Cc: oracle-l_at_freelists.org<http://uk.mc237.mail.yahoo.com/mc/compose?to=oracle-l_at_freelists.org>
>>> Date: Thursday, 30 July, 2009, 9:57 AM
>>>
>>>
>>> Hi
>>>
>>> Public IP is for the server (like any other server physical IP)
>>> VIP for Database access (provides Failover and Failback if configured)
>>> and must be in the same subnet as Public IP
>>> Private IP for Clusterware heartbeat and RAC Cache Fusion
>>>
>>>
>>> Regards
>>>
>>> --
>>> LSC
>>>
>>>
>>> On Thu, Jul 30, 2009 at 10:50 AM, hrishy <hrishys_at_yahoo.co.uk<http://uk.mc237.mail.yahoo.com/mc/compose?to=hrishys_at_yahoo.co.uk>
>>> > wrote:
>>>
>>>> Hi
>>>>
>>>> If my System administrator gives me bunch of IP's for installation of
>>>> RAC cluster
>>>> how would i know which ip is to be used for
>>>>
>>>> Public IP
>>>> Private IP for the interconnect
>>>> VIP
>>>>
>>>> regards
>>>> Hrishy
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>
>>
>

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Received on Thu Jul 30 2009 - 10:00:46 CDT