Noel, On Dec 5, 2011, at 10:58 AM, Noel Chiappa wrote: >> From: Bob Hinden <bob.hinden@xxxxxxxxx> > >> As far as I can tell, it would only require the CPE router, CGN's, and >> routers between the CPE and CGN's to support it. ... I think it's >> reasonable for the ISPs who want to deploy this CGN gear to the deal with >> upgrading the CPE routers of their customers. > > The problem is that for a lot of ISPs, the CPE equipment is owned by the > customers, and comes from a zillion different vendors, and upgrading all of > them is just not feasible. Sure, for all forms of CPE currently deployed. I assume that there aren't any CPE deployed behind CGN today. That is, all CPE today work without CGN and any sort of special addresses, probably use public IPv4 space on the WAN/ISP side. So a CGN deployment is a new deployment and the ISPs choosing to do this could make sure that their customers CPE can support class E addresses, upgrade the CPE firmware, or send them new CPE. Bob > >> The proposal to use some of the remaining public IPv4 space for this, >> IMHO has everyone else incur the costs. > > Scenario I: The IETF defines a /10 for this use, to be shared by all ISPs. > Scenario II: The IETF refuses to define a /10 for this use, each ISP goes > out and asks for its own. > > Scenario II is incurring less cost on 'everyone else'... how? > > > Which does lead me to something I've been wondering about, though. > > Why don't the ISPs get together, outside the IETF (I so wanted to expand on > this thought, but I had better not), and have one of them - one which is in > an area with an RIR with the most available space - go their RIR and ask for > a /10 for their in-house CGN - and then publish the number and say 'hey, > everyone, here's a /10 that anyone can use for their CGN'? And then, _once > it's already allocated_, they could even publish an I-D/non-standard-track > RFC documenting it, and how to use it... > > Noel > _______________________________________________ > Ietf mailing list > Ietf@xxxxxxxx > https://www.ietf.org/mailman/listinfo/ietf _______________________________________________ Ietf mailing list Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf