> The reason a route learned via iBGP isn't announced to other iBGP
neighbours
> is to prevent looping. In eBGP, you have the AS path to tell you when
> there's a loop (i.e. if you see your own AS number, there's a loop).
Since
> every router in iBGP is in your AS, you can't use the AS path as a loop
> detection mechanism. Therefore, you have to prevent loops by mandating
that
> you can't announce routes learned via iBGP to another iBGP neighbour. The
> obvious exception to this rule is if you're a route reflector. Then, you
> have to introduce cluster ids and originators to solve the problem of
> induced loops.
>
yup i guess i need to look at RR and confederations a bit more...maybe i
could end up with loops there too?...
thanks for the inputs..
-rgds
alok
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