Date: Mon, 27 Feb 2017 15:37:14 -0800 From: Freddie Cash <fjwcash@gmail.com> To: Julien Cigar <julien@perdition.city> Cc: freebsd-net <freebsd-net@freebsd.org> Subject: Re: VLAN + CARP ? Message-ID: <CAOjFWZ72mVmxw-4q=5dOwUYMcxfeK4qg0ipO79tuTc4wu6vZLA@mail.gmail.com> In-Reply-To: <20170227231626.GJ6194@mordor.lan> References: <20170227231626.GJ6194@mordor.lan>
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On Mon, Feb 27, 2017 at 3:16 PM, Julien Cigar <julien@perdition.city> wrote: > I wondered if it is possible to use CARP with VLAN interfaces? > Yes, CARP-over-vLAN works well. Used just such a setup at work for a couple years. Would something like this work (on 10.3)..?: > > = /etc/rc.conf ============ > > vlans_em0="neta netb" > create_args_neta="vlan 101" > create_args_netb="vlan 102" > > ifconfig_em0_neta="inet 192.168.1.253/24" > ifconfig_em0_netb="inet 10.209.1.253/24" > > ifconfig_em0_neta_alias0="inet vhid 3 advskew 10 pass xx alias > 192.168.2.254/32" > ifconfig_em0_netb_alias0="inet vhid 4 advskew 10 pass xx alias > 10.209.1.254/32" > > =========================== > This is the setup we used (snipped for brevity): # em2 is the 3rd NIC port from the top of the quad-port NIC ifconfig_em2="up" vlans_em2="vlan110 vlan2000 vlan1000 vlan1010 vlan1110" create_args_vlan1000="vlan 1000" ifconfig_vlan1000="vhid 9 pass nxsp4ss 1 advskew 128 10.1.0.1/16" create_args_vlan2000="vlan 2000" ifconfig_vlan2000="vhid 20 pass nxsp4ss2 advskew 128 12.24.13.97/27" create_args_vlan1010="vlan 1010" ifconfig_vlan1010="vhid 21 pass nxsp4ss 3 advskew 128 12.24.12.129/26" create_args_vlan1110="vlan 1110" ifconfig_vlan1110="vhid 11 pass nxsp4ss 4 advskew 128 12.24.10.1/26" em2 had no IPs associated with it, it was just the physical interface that the vlans and carp traffic went over. We also only had a single subnet per vlan, so only a single IP per carp instance on each vlan. But you can do multiples using the alias syntax like you have. -- Freddie Cash fjwcash@gmail.com
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