Date: Tue, 24 Aug 2010 22:36:34 +0200 (CEST) From: Ingo Flaschberger <if@xip.at> To: "Li, Qing" <qing.li@bluecoat.com> Cc: net@freebsd.org Subject: RE: funny ECMP Message-ID: <alpine.LFD.2.00.1008242227350.12708@filebunker.xip.at> In-Reply-To: <B583FBF374231F4A89607B4D08578A4307F20002@bcs-mail03.internal.cacheflow.com> References: <alpine.LFD.2.00.1008230154280.29368@filebunker.xip.at> <alpine.LFD.2.00.1008240144350.12708@filebunker.xip.at> <B583FBF374231F4A89607B4D08578A4307F1FC70@bcs-mail03.internal.cacheflow.com> <alpine.LFD.2.00.1008240223240.12708@filebunker.xip.at> <alpine.LFD.2.00.1008242005160.12708@filebunker.xip.at> <B583FBF374231F4A89607B4D08578A4307F1FF22@bcs-mail03.internal.cacheflow.com> <alpine.LFD.2.00.1008242027390.12708@filebunker.xip.at> <B583FBF374231F4A89607B4D08578A4307F1FF79@bcs-mail03.internal.cacheflow.com> <alpine.LFD.2.00.1008242102410.12708@filebunker.xip.at> <B583FBF374231F4A89607B4D08578A4307F20002@bcs-mail03.internal.cacheflow.com>
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Dear Li, > Sure, but such a configuration did not make much sense. Why not? Use CARP and OSPF and you have such a configuration. > I read your other email explaining why your system is configured > this way but I am still unclear from you text. Router 1 and Router 2 share 1 Ipadress via VRRP / CARP at interface LAN Router 1 and Router 2 speak OSPF (routing protocoll) at interface WAN Router 1 tells those routes to Router 2 and back. With CARP when the interface LAN at Router 1 ist in state MASTER, there is the LAN-IP online and also the LAN-Net. At this moment also Router 2 holds a route to LAN-net via Router 1 WAN interface. Now Router 1 interface LAN goes down. Router 2 CARP recognize this, and want to install LAN-IP and LAN-net. -> can not install route as there is still a route from Router 1. I hoped, that now, as freebsd has multi-route support (as other unix really have for a long long time) everything would be easier. But multipath support of freebsd is in my opinion, in a "experimental" state. Kind regards, Ingo Flaschberger
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