Arbitrary AS substitution allows loop creation, even if your own AS is required.
All that is needed, is multiple instances of replace-as in the loop. Suppose A replaces B C D with A E F. Suppose B replaces G A with B C D. A received B C D, sends A E F to G. G sends G A E F to B. B sends B C D E F to A. We have a loop, which eventually results in path overflow with E F E F E F etc. at the end of it. On Wed, Mar 28, 2012 at 4:07 PM, Robert Raszuk <[email protected]> wrote: > > the 'replace-as' seems like >> loop-creation, joy. >> > > Nope. No loops at least in one implementation ... the implementation > mandates that you insert your own AS - that is not optional. > > Rgs, > R. > > ______________________________**_________________ > sidr mailing list > [email protected] > https://www.ietf.org/mailman/**listinfo/sidr<https://www.ietf.org/mailman/listinfo/sidr> >
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