Re: RAC private network IP's - 169.254.x.x
- From: "Radoulov, Dimitre" <cichomitiko@xxxxxxxxx>
- To: D'Hooge Freek <Freek.DHooge@xxxxxxxxx>
- Date: Fri, 06 Apr 2012 12:41:01 +0200
Hi Freek,
On 06/04/2012 12:29, D'Hooge Freek wrote:
> How can you assign a different vlan on network ports that are part of the
> same bond?
> I would think this would break your bonding, meaning you tested on a bond
> that has only 1 working network port to begin with.
Correct. It was exactly that - a totally miss-configured bonding. It
was due to a misunderstanding between
the sysadmin group and the dba group that provided the installation
requirements.
We noticed that error during the HA tests ...
> The reason why you need to use separate subnets when using HAIP with multiple
> nics is the os routing. When you have multiple ip addresses in the same
> subnet on a server, it is the routing table which determines the interface to
> be used for outgoing traffic.
> If that interface fails, the routing table will not be changed and thus all
> communications break.
>
> This is also the reason why one should not use ifdown to test network
> failures.
> It does things to cleanly, like removing the entry for that interface from
> the routing table.
Thanks for the explanation!
Best regards
Dimitre
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