Damian, On 07/18/11 10:59, Damian wrote: > Hi ML, > > I am trying to understand the concept of LISP and would like to pose some > questions, if that is okay. > > Who exactly is supposed to run and configure ETRs and ITRs? In my > understanding it is those organizations, who participate in global BGP > routing, so basically those with their own ASes? What about smaller > organizations who have their own RIPE-registered IP-net but are just one > of many networks in a larger AS? I suppose, it does not make sense for > such smaller organizations to set up their own ETRs/ITRs to serve the > original purpose, as it wouldn't offload the Internet's global BGP table. > > Nevertheless, there are other benefits for smaller companies which run > multiple sites. Site-to-site routing could be balanced for instance, if > each site was multi-homed and multiple ETRs per site were available. I > wonder however, what will happen if someone invests in several Nexus 7000 > to leverage those benefits today, and some time later the AS owning > provider has plans to set up his own LISP-infrastructure. Won't there be a > problem with double-encap or similar?
Double-encap was taken into account in the design of LISP, and the scenario you describe will be possible. For the encapsulations on the different levels you can use different mapping systems, so for example on the first level you keep using your company's mapping system and the AS border routers would use the global mapping system. You just have to be careful to avoid MTU problems. Regards, -Lori > Best Regards > Damian > > _______________________________________________ > lisp mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/lisp _______________________________________________ lisp mailing list [email protected] https://www.ietf.org/mailman/listinfo/lisp
