On Fri, Feb 16, 2018 at 1:20 AM, Chris L <c...@viptalk.net> wrote:

> On Feb 15, 2018, at 11:35 AM, ad^2 <adsquai...@gmail.com> wrote:
> >
> > Hello all,
> >
> > I read in the forum (h_t_t_p_s://forum.pfsense.
> org/index.php?topic=109346.0)
> > the 255 VHID limitation in CARP is no longer an issue in recent
> versions. I
> > cannot find any documentation to support it.
> >
> > I have a need to host a lot more than 255 virtual IP addresses.
> >
> > Can someone confirm or deny this. If it's true point me to the
> > documentation that states this. If not, is there a way around it?
> >
> > Thanks in advance,
> >
>
> jimp was referring to the requirement that a CARP VIP must be contained in
> the same subnet as the interface address. Removal of that
> requirement/limitation is what changed.
>
> The VHID is 8 bits and you can’t use 0 so 1-255.
>
> As discussed there, make IP Alias VIPs and assign them to CARP VIPs. They
> will go up and down with CARP MASTER/BACKUP status and will result in no
> additional multicast traffic per VIP. Try it I think you’ll like it.
>
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Ok I understand. What are the limitations here? How many aliases can be
stacked on one CARP VIP?

Is anyone out there running +255 VIPs?  My implementation will required at
least 500 floating IPs right away.

Thanks,

JD
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