Noel, On 11-12-04 10:55 AM, "Noel Chiappa" <jnc@xxxxxxxxxxxxxxxxxxx> wrote: > >I ask because I gather there are a lot of situations where e.g. a cable >modem >has an ISP-local address on its ISP-facing side, and a global IP address >(which the customer gets) on the customer side. (I see this in checking >out my >path to the Internet from my house - I see some 10.xx addresses on the >other >side of the cable modem.) Could a block of 240/ space be used for things >like >that? This is a cable specific use case based on your comments. I would separate the CM (Modem) IP address and function from the customer (CPE) addressing function. I don't think ISPs have specifically claimed issues with CM addressing but for the CPE customer side. Also, consider the CM address ranges as somewhat transparent to the CPEs needs getting to the Internet. Although you may see evidence of the space by a traceroute, it serves no direct purpose for you Internet flow (I.e. Your next hop address from your CPE will be the CMTS interface/IP in most cases). So, back to your point, whereas 240/4 may be somewhat usable on the CM side in the future, the CPE space is what's in question here. Regards, Victor K > >Sure, the 240/ space wouldn't be useful as a source of addresses for >_customer-owned_ equipment - but could it be useful elsewhere inside an >ISP's >network? (And perhaps also as a source of addresses for CPE equipment >which >_will_ tolerate being given a 240/ space address, although I concede that >may >be very few boxes, at least at first.) > > 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