From: Jonathan V Hays (jhays@jtan.com)
Date: Fri Jul 11 2003 - 22:01:40 GMT-3
> From this observation, is it correct to conclude that a route
> can only be
> redistributed once on a given router?
>
> I would have thought that once a routing protocol knows of a
> route, regardless
> of whether it learned about it from redistribution or from
> another router
> running that routing protocol, it could redistribute that
> route into another
> routing protocol, unless the route was filtered during
> redistribution. And,
> that now the 2nd routing protocol knows of that route, the 2nd routing
> protocol could redistribute the routes it knows into a 3rd
> routing protocol,
> etc.
>
> What do you all think. I'd appreciate your feedback. Thanks, Jim
>
Jim,
Howard gave some hints on a similar problem recently. See
http://www.groupstudy.com/archives/ccielab/200306/msg01693.html
You are correct: redistribution happens ONCE. Just think what would
happen if the router redistributed EIGRP routes into OSPF, then
redistributed those OSPF routes back into EIGRP, and so on.... Where
would it stop?
Let's say you are running OSPF and EIGRP. You type this:
router eigrp 100
redistribute ospf 1 metric 1000 100 255 1 1500
Where does the IOS obtain the routes to be redistributed into the
receiving protocol (EIGRP in this case) ?
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