CARP and NAT question

[Julien Cigar]

On Tue, Oct 08, 2019 at 10:20:34AM -0500, Matthew Grooms wrote:
> Hi Julien,

Hi Matthew,

> 
> It's not clear why you are trying to assign multiple carp IP address to 
> two different interfaces from within the same IP subnet. Are you trying 
> to fail over a 2nd carp address or are you trying to improve 
> throughput/redundancy? If you just want to fail over a 2nd carp address, 
> assign a 2nd alias to your first interface. If your trying to improve 
> throughput/redundancy, assign both interfaces to a lagg and build your 
> carp interfaces on top of that instead.
> 

Currently outbound traffic from $net1 and $net2 (two private networks) 
pass through the same network interface (igb0) (as you can see in (1) 
in my previous post) on the router. I'd like to prevent that 
$net2 saturates the interface and slow down traffic from $net1 (which is
more important). I could lagg and build CARP on top of that but it
wouldn't prevent $net2 to saturate the interface (unless I'm plugin ALTQ
of course, which I'd like to avoid).

> -Matthew
> 
> On 10/8/2019 8:48 AM, Julien Cigar wrote:
> > Hello,
> >
> > I'd like to NAT outbound traffic from two different private networks
> > through two different interfaces, with CARP on top. I have 4 public IPS
> > available (193.x.x.89, 193.x.x.90, 193.x.x.91, 193.x.x.92).
> >
> > I have two redundant router/firewall running FreeBSD 12 with CARP and
> > PF with the following: (1) which works well, but all traffic
> > goes through the same interface.
> >
> > So I'd like to switch to something like (2), which will not work (lines
> > 5 and 13 are not valid) and I'm wondering if I could use something like
> > (3) ..?
> >
> > Thank you!
> > Julien
> >
> > (1) https://gist.github.com/silenius/4f6173a9b6690292c2174ab3bb89d292
> > (2) https://gist.github.com/silenius/da9be7e74e9861fa55f927d194e3e410
> > (3) https://gist.github.com/silenius/b237565b0d181248ff80ea296e5537db
> >
> _______________________________________________
> freebsd-net at freebsd.org mailing list
> https://lists.freebsd.org/mailman/listinfo/freebsd-net
> To unsubscribe, send any mail to "freebsd-net-unsubscribe at freebsd.org"

-- 
Julien Cigar
Belgian Biodiversity Platform (http://www.biodiversity.be)
PGP fingerprint: EEF9 F697 4B68 D275 7B11  6A25 B2BB 3710 A204 23C0
No trees were killed in the creation of this message.
However, many electrons were terribly inconvenienced.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 833 bytes
Desc: not available
URL: <http://lists.freebsd.org/pipermail/freebsd-net/attachments/20191008/259df937/attachment.sig>