Date: Wed, 6 Apr 2011 14:10:10 -0400 From: "J. Hellenthal" <jhell@DataIX.net> To: "K. Macy" <kmacy@freebsd.org> Cc: Baginski Darren <kickbsd@yandex.ru>, Nikolay Denev <ndenev@gmail.com>, freebsd-net@freebsd.org, Michael Proto <mike@jellydonut.org> Subject: Re: Multiple gateways support Message-ID: <20110406181010.GB50909@DataIX.net> In-Reply-To: <BANLkTinjnZWaahNyKofrktAjEN0Hgcg3BA@mail.gmail.com> References: <1128701301678831@web100.yandex.ru> <BANLkTi=nNSeMmum3Ecoca2RFuQZS2BvbBA@mail.gmail.com> <20110406120207.GA32062@DataIX.net> <BANLkTi=EgjK6K2FrxhZJO-sNEmwCNbAweQ@mail.gmail.com> <5A6C513B-E30B-4E32-8556-D6501E8EE59B@gmail.com> <BANLkTinjnZWaahNyKofrktAjEN0Hgcg3BA@mail.gmail.com>
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Hmmm funny, seems the mailing list is now stripping my address and moving posts to the top. On Wed, Apr 06, 2011 at 06:15:19PM +0200, K. Macy wrote: > The weights of the links can be changed at run time. If one link is > not passing traffic its weight should be set to zero until such time > as it is passing traffic again. > > On Wed, Apr 6, 2011 at 6:13 PM, Nikolay Denev <ndenev@gmail.com> wrote: > > On Apr 6, 2011, at 5:36 PM, Michael Proto wrote: > > > >> On Wed, Apr 6, 2011 at 8:02 AM, J. Hellenthal <jhell@dataix.net> wrote: > >>> On Wed, Apr 06, 2011 at 01:45:54PM +0400, Eir Nym wrote: > >>>> On 1 April 2011 21:27, Baginski Darren <kickbsd@yandex.ru> wrote: > >>>>> Hi! > >>>>> > >>>>> Could please someone tell me about current state of multiple gw capabilities of FreeBSD? > >>>>> I have dual homed FreeBSD box, one interface ISP1 another ISP2 : > >>>>> 1) can I balance outgoing traffic across them ? > >>>>> 2) Is there support of any kind dead gateway detection? > >>>>> 3) Can I install multiple routes to the same network (with same and with different wight)? If yes how it behaves with one link failure, in particular if interface is down? > >>>>> > >>> > >>> From what you said here it seems that your looking for lagg(4) with > >>> configured with the loadbalance option. Give this man page [1] a > >>> thorough read and youll probably see what your looking for. > >>> > >>> 1) http://www.freebsd.org/cgi/man.cgi?query=lagg > >>> > >>> > >>>> > >>>> about multiply GWs: you can set multiply gw via setfib(1) utility and > >>>> use fib in your firewall rules. But it is not very handy with DHCP and > >>>> rc(8) (setfib is located in /usr/bin and can't be used in /etc/rc.d). > >>>> Due to this I have to add another FreeBSD box to handle dynamic > >>>> routes. > >>>> > >>>> This is the one thing I know which can I do in linux easily and in > >>>> freebsd with hacks. > >>> > >>> -- > >>> > >>> Regards, > >>> > >>> J. Hellenthal > >>> JJH48-ARIN > >>> 0x89D8547E > >>> > >>> > >> > >> > >> I don't think lagg(4) will work here, as its designed for two > >> interfaces that are attached to the same network (see the example in > >> the man page). For two different ISPs, I think the setfib approach is > >> probably the way to go. > >> > >> > >> -Proto > >> > > > > Actually I think the OP is asking about the "options RADIX_MPATH" feature. > > > > 1) Yes, It can balance over the two links but only using Modulo-N Hash (RFC2991) algorithm, and probably you should setup NAT on both links. > > 2) AFAIK there is no dead gw detection code yet. > > 3) Yes you can do that. There were some fixes for handling interfaces with no-link but I was not able to see it working in my setup. e.g. the host still tries to send traffic to a interface with no link, effectively blackholing the traffic (this was tested on a soekris box with if_vr(4)) > > > > IMHO the whole RADIX_MPATH stuff is still in experimental stage and needs some more work to work correctly. > > > > There is a recent thread about some improvements in RADIX_MPATH. > > > > Regards, > > Nikolay > > > > _______________________________________________ > > freebsd-net@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-net > > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" > > > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" -- Regards, J. Hellenthal JJH48-ARIN 0x89D8547E
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