Re: RAC private network IP's - 169.254.x.x
Date: Fri, 06 Apr 2012 12:04:38 +0200
Message-ID: <4F7EBFB6.6020803_at_gmail.com>
Thanks Goran!
One of our customers is using bonding for the private Interconnect (every node has 4 NICs - 2 in bond for the public and 2 for the private network, GI sees bond0 and bond1). Initially separate private vlans were used for the Interconnect and, during an HA test, disabling one of the NICs in bond on one of the nodes completely broke the communication. After that we configured all interfaces used
for the Interconnect in the same pvlan and after rebooting the nodes, all worked well.
This issue is of course different as the customer is using bonding and
not GI's HAIP directly
for Interconnect redundancy.
Regards
Dimitre
On 06/04/2012 11:24, goran bogdanovic wrote:
> pay attention on
> *
> *
> *Bug 10389682: HAIP INTERCONNECT DOES NOT WORK IF IP ADDRESSES ARE IN
> THE SAME SUBNET*
>
> if you use more than one NIC for interconnect ...
>
> goran
>
>
>
> On Fri, Apr 6, 2012 at 10:10 AM, Radoulov, Dimitre
> <cichomitiko_at_gmail.com <mailto:cichomitiko_at_gmail.com>> wrote:
>
> Hi Krishna,
> as already stated, the 169.254.*.* is used by GI automatically:
>
> 11gR2 Grid Infrastructure Redundant Interconnect and
> ora.cluster_interconnect.haip [ID 1210883.1]
>
> Grid automatically picks free link local addresses from reserved
> 169.254.*.* subnet for HAIP. According to RFC-3927, link local subnet
> 169.254.*.* should not be used for any other purpose. With HAIP, by
> default, interconnect traffic will be load balanced across all active
> interconnect interfaces, and corresponding HAIP address will be failed
> over transparently to other adapters if one fails or becomes
> non-communicative. .
>
>
> Dimitre
>
>
> On 06/04/2012 09:57, D'Hooge Freek wrote:
> > I think the 169.254.0.0/16 <http://169.254.0.0/16> subnet is
> used for autoconfiguration ip addresses.
> > Which are addresses that are self assigned after verifying that
> no one else is using it by sending out an arp ping (for instance,
> in case when the dhcp server is not giving out an address).
> >
> > You should not use them when statistically assigning an ip address.
> >
> > Oracle is using ip addresses in this range for the private
> network as part of the high available ip address (HAIP)
> functionality (which is also the reason multicast's must be
> allowed between the different nodes).
> >
> [...]
> > Can we use 169.254.1.11& 169.254.1.12 as private IP's for RAC 2
> node
> > cluster?
> > (basically any 169.254.x.x )
> >
> > we just have 1 private NIC for each node.
> >
> > version: 11.2.0.3 rac
> > RHEL 5.8
> >
>
>
> --
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>
>
>
-- http://www.freelists.org/webpage/oracle-lReceived on Fri Apr 06 2012 - 05:04:38 CDT