> no, you never sent anything of this route to E so E never had anything > to pass along to C and then to D ... knowledge of this path is not > there, in both the SIDR and non-SIDR cases. All D knows in both SIDR > and non-SIDR cases is: "Look at that, a path through C to B to A, > joy!"
If E makes up a route and sends it to D, how does D know which route to choose? Without SIDR --pick up the phone, look at contracts, etc. With SIDR --look at the signature. Clearly you've included information that didn't exist before, and that information is in the form of a policy. > where is this information? about 'advertising' ? there's no concept in > SIDR of 'you advertise to ..' or 'you are supposed to advertise to X'. Because you've attempted to define it out of existence --but that doesn't make it any less real in actual implementations or deployments. You're playing games with hermeneutics here --"That signature isn't about policy, even I've insisted that it be per prefix, and I mean for you to use it to tell you whether or not someone intended to send a route to someone else (and not whether or not such a path exists). But because I'm only trying to prove the positive, and not the negative, I'm not talking about policy." Not being a postmodernist, I still think words actually mean something --they actually correlate to some reality--, and they should mean the same thing from the beginning of the conversation to the end of it. > Now I think i'm not the confused one... We're starting from different presuppositions. You're assuming per prefix policy isn't really policy (because you're not signing something saying not to advertise x), and doesn't need to be dealt with as policy. I'm stating that failure to advertise is a policy decision, and hence when you go about _proving_ someone didn't intend to advertise something, then you're still making a statement of policy. If you're going to deal with policy at all, then deal with policy in total, as policy, in the open, rather than sneaking it in through the back door. Russ _______________________________________________ sidr mailing list [email protected] https://www.ietf.org/mailman/listinfo/sidr
