CARP - Multiple CARP addresses or IP Aliases?
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Ok so I have our main carp setup working in a beautiful fashion. Very nice stuff this!.
Now comes the time where I need to add more IPs to our public interface. We have a /22 from the ISP and the carp setup is using /22 correctly.
So, I've been advised to use IP Aliases to add the rest of the IPs, and not setup seperate carp records for them as each carp record uses broadcast/multicast to advertise itself.
Is this correct, I should use IP Aliases?
Can you monitor the status of the IP Alias the same way you can monitor which box a CARP address is on?
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It's a brand new option that works fine.
To get it working, on ip alias gui select your working carp interface instead of wan,lan,etc.
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If you have two systems setup, all your VIPs must be CARP. IP aliases are only on the primary, can't have them on two systems as they cannot be shared.