On 07/11/2013 16:26, Antoine Beaupré wrote:
and because VRRP is patent-encumbered
CARP is probably patent encumbered too. I don't understand why people claim that using CARP as a default gateway isn't patent encumbered because it uses pretty much exactly the same process that the VRRP patent covers. To be honest, I wouldn't get too upset about it as the patent expires early next year, so this is not important. Also bear in mind that if you decide to migrate to VRRP later on and for some reason use the same VRRP group as CARP vhid, you will trash your network connectivity. The OpenBSD people specifically designed CARP so that it would break VRRP on the same network if they use the same parameters, but sadly they refuse to document this. It's documented elsewhere on the web though, so bear it in mind if you ever implement CARP and then move to VRRP.
I am worried, however, of rumours of kernel panics associated with CARP, but I am confident that the very responsive FreeBSD community will be able to help with that.
I hope so. There have been some long-standing problems, but hopefully the work done on fixing carp in freebsd 10 will finally see the end of these issues. Nick