Re: RAC private network IP's - 169.254.x.x

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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