> From: Patrick Frejborg <pfrejb...@gmail.com> > Yes, and I believe that the Trojan Horse is called MPTCP :-)
Support for multiple PA addresses does certainly help with the multi-homing aspects, but does it help with number (address) portability at all? I mean, you just did say (above): > the subscriber owns the number and can choose which ever service > provider [they] prefer[]. So we should keep this model in the Internet > as well. So is portability an important (critical?) goal or not? If so, how would portability be done, if multi-homing is handled with multiple PA addresses? > If the CES solution becomes popular and gets widely deployed, e.g. if > broadband routers will include an ITR stack it will increase cache > sizes on the ETRs in front of popular sites. Cache sizes in front of large content providers are the thing that concern me the most, but I don't think you're likely to see the _average_ residential customer getting their own mapping entry. That's because most residential customers don't have any need for the things you need a mapping entry for - multi-homing, address portability, etc. (Heck, my ISP seems to change my address on a regular basis, but because I'm not running any servers, I don't notice.) But I am still worried about cache sizes with LCPs. > Can you get a better story if you combine a CES with CEE from day one, As I pointed out, most any CES can also be a CEE without much work. Maybe that's the solution to the LCP problem - move the mapping stuff into their servers, so they don't have the ETR caching issue? They generally all have customized gear anyway, so that's probably actually feasible, now that I think about it. Of course, in a _rational_ design we wouldn't have this caching/identifier-lookup issue, because the system would have been designed from day one for the DNS lookup to return an {EID, RLOC} tuple, which would be kept together thereafter. Blasted 'changing engines while the plane is flying' - sure produces some ugly configurations.... Noel _______________________________________________ rrg mailing list rrg@irtf.org http://www.irtf.org/mailman/listinfo/rrg