Date: Thu, 09 Feb 2006 11:32:33 -0800 From: Julian Elischer <julian@elischer.org> To: "Webster, Andrew" <awebster@connectalk.com> Cc: Qing Li <qingli@freebsd.org>, freebsd-questions@freebsd.org, freebsd-net@freebsd.org Subject: Re: Multiple routes to same destination Message-ID: <43EB98D1.30702@elischer.org> In-Reply-To: <9D61D69E3C1F7F459C5513AD830EE2192BC2AA@mtlex01.connectalk.com> References: <9D61D69E3C1F7F459C5513AD830EE2192BC2AA@mtlex01.connectalk.com>
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Webster, Andrew wrote: >>Qing Li wrote: >> >>I use mpd to greate one VPN between the sites, using Multilink PPP, so >>that >>data is sent across both links (eitehr round-robon or split packet). >>I use MPD's udp transport mode to open two UDP sockets >>and send packets from R1 to R4 and from R2 to R3 (in the diagram >> >> >below). > > >>MPD will automatically detect if on e link is down and redirect >>everything through the remaining link. >> >> > >Sounds like a good idea, but would that not cause the MTU to get smaller >due to the overhead of a MPPP link? >Windoze hosts have a horrible time with MTU detection! > > I think you can now do mtu munging in teh newer mpd if not you could use the daemon to do it from ports. > > >>> I have a private patch that's based on radix_mpath for FreeBSD >>> >>> >5.4. > > >>> I believe andre@freebsd.org is working on a solution. >>> >>> -- Qing >>> >>> >>>-----Original Message----- >>>From: owner-freebsd-questions@freebsd.org [mailto:owner-freebsd- >>> >>> >>questions@freebsd.org] On Behalf Of Webster, Andrew >> >> >>>Sent: Wednesday, February 08, 2006 10:51 AM >>>To: danial_thom@yahoo.com; Ian Lord; freebsd-questions@freebsd.org >>>Subject: RE: Multiple routes to same destination? >>> >>>Well, in that case, an ISP wouldn't want to use FreeBSD in their core >>> >>> >>routers :( :( >> >> >>>In this particular case, I have redundant links (L1 and L2) between >>> >>> >two > > >>locations >> >> >>>(Loc 1 and Loc 2) with two FreeBSD routers at each location (R1/R2, >>> >>> >and > > >>R3/R4) >> >> >>>which are running OSPF to redistribute routing information between >>> >>> >>locations. >> >> >>>Since FreeBSD limits the entries for a particular network to only one >>> >>> >>active entry, >> >> >>>the all the traffic for would either go on R1->L1->R4 or R2->L2->R3, >>> >>> >but > > >>not both. >> >> >>>Loc 1___ /---R1--L1--R4---\___ Loc 2 >>> \---R2--L2--R3---/ >>> >>> >>>Andrew >>> >>>_______________________________________________ >>>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-questions@freebsd.org mailing list >>http://lists.freebsd.org/mailman/listinfo/freebsd-questions >>To unsubscribe, send any mail to "freebsd-questions- >>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" > >
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