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Date:      Mon, 4 Aug 2008 16:00:37 -0300
From:      "Alexandre Biancalana" <biancalana@gmail.com>
To:        questions@freebsd.org
Subject:   Re: carp+openospfd
Message-ID:  <8e10486b0808041200i88b69f6la8596ecfce72167a@mail.gmail.com>
In-Reply-To: <200808011333.21884.nvass@teledomenet.gr>
References:  <8e10486b0807292151wa67d464kfd906da08a2f8053@mail.gmail.com> <200807301806.04141.nvass@teledomenet.gr> <8e10486b0807312054i7b3ca5f1x19f4899ef5a638c3@mail.gmail.com> <200808011333.21884.nvass@teledomenet.gr>

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On 8/1/08, Nikos Vassiliadis <nvass@teledomenet.gr> wrote:
> On Friday 01 August 2008 06:54:02 Alexandre Biancalana wrote:
>  > The firewalls failover this is working great with Carp. My
>  > difficulties is to configure OpenOSPFD to distribute routes in this
>  > setup,
>
>
> Two points:
>  1) Did you try to run OSPF on the CARP interface?
>  Or the physical one? I don't think running OSPF
>  on the CARP interface will work, cause the CARP
>  interface receives nothing while at BACKUP mode.

OpenOSPFD always see CARP interfaces as passive...


>
> No, OSPF cannot provide load balancing, as FreeBSD does not support
>  equal cost multipath routing, that is you can use one and only one
>  next hop for a destination. So, in short, OSPF will not do load
>  balancing, as it does with other vendors you may be familiar with.

bad news... I remember now that multiple fibs are too new on FreeBSD...

Thinking again, I can survive with equal cost multipath routing and do
the failover via script...

How's good is our ECMP ?  Have someone tested this ?
>
>  If you run CARP on the LAN links as well(which you probably do),
>  you should test and see how CARP's ARP level load balancing fits
>  your network...

It's working as expected

Thank you again!



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