Date: Fri, 1 Aug 2003 21:30:51 +0200 From: "Oldach, Helge" <Helge.Oldach@atosorigin.com> To: "Michael W. Oliver" <michael@gargantuan.com> Cc: freebsd-net@freebsd.org Subject: RE: Multipath Routing Message-ID: <D2CFC58E0F8CB443B54BE72201E8916E94C9B8@dehhx005.hbg.de.int.atosorigin.com>
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> I am no programmer, so forgive my ignorance in that respect, but why can't a > metric be used to differentiate routes to the same destination network > within the routing table? I happened to be googling and found: > > http://daily.daemonnews.org/view_story.php3?story_id=3878 > > which describes a patch to -STABLE that does exactly what I am talking > about. Routing will always follow the better metric. That's the paradigm. So if you have two routes the one with the better metric will always rule. Frankly, I don't quite see the rationale for such a hack. This can be solved using available mechanisms such as VRRP (or HSRP, if the gateways are decent routers). Furthermore: It doesn't detect when remote hosts are down. This is not the job of the kernel. It's not a routing protocol, it's not an automatic failover system. So what is this good for, that cannot be solved by already available mechanisms? Helge
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