Jouni, On 2011-12-07 10:17, Jouni wrote: > Brian, > > On Dec 6, 2011, at 10:50 PM, Brian E Carpenter wrote: > >> Jouni, >> >> I found some time to look quickly at this spec, and I see that indeed >> prefix delegation via AAA *or* DHCPv6 is supported, but there is no mention >> of RFC 4191 (RIO). Regular use of RA is of course covered. >> >> You said >> >>>> It is quite common >>>> feature e.g. in 3GPP defined networks that the per subscriber prefix for RA >>>> comes off AAA. >> But that doesn't explain how prefix delegation would be managed with RAs, or >> how >> RIOs would be generated. > > Please, do not put words in my mouth.
I didn't mean to do that at all! I was just trying to state the problem. I'm sorry if it appeared otherwise. > Did I claim PD would work or be managed with RA? No. Per-subscriber prefix > for RAs is for SLAAC purposes as you very well know. > Did I claim 29.061 carries more specific routes for RIOs? No. > Did I claim RFC4191 is even supported by 3GPP system? No. A GGSN/PGW > implementation *can* use RFC4191 and put RIOs in RAs if it wishes. The system > specification does not prohibit doing that. A "pedantic" 3GPP UE would then > just ignore those options. We agree; all of those things appear to be unspecified. > If your DHCPv6 server happens to be in GGSN/PGW, you can configure the > delegated prefix using 29.061 AAA profile and Delegated-IPv6-Prefix attribute > - as a one option. Indeed. What I don't see anywhere is a document describing how to create such a stateful-server model using RAs. I think that's why this thread exists. My understanding has always been that the strategy was to keep RA as a simple model without rich extensibility, and to use DHCPv6 for more complex scenarios. So the judgment to make here is whether all MIF scenarios (and all HOMENET scenarios) are complex in that sense. Brian > - Jouni > > >> Regards >> Brian Carpenter >> >> >> On 2011-12-03 11:26, Jouni wrote: >>> http://www.3gpp.org/ftp/Specs/html-info/29061.htm >>> >>> - Jouni >>> >>> On Dec 3, 2011, at 12:15 AM, Brian E Carpenter wrote: >>> >>>> Where can I find TS29.061? >>>> >>>> Brian >>>> >>>> On 2011-12-03 10:55, Jouni wrote: >>>>> On Dec 2, 2011, at 8:49 PM, Tao Sun wrote: >>>>> >>>>>> Latest yesterday I tweaked with such implementation. It is quite common >>>>>> feature e.g. in 3GPP defined networks that the per subscriber prefix for >>>>>> RA comes off AAA. It has been there in specs for say 9 years and >>>>>> deployed at least several years. Also the per subscriber delegated >>>>>> prefixes may come from AAA.. like the rest of the end host configuration >>>>>> information. >>>>>> >>>>>> [Tao] Could you be more specific which spec you are referring to? >>>>>> Unfortunately, it is not ture that such implementation has >>>>> TS29.061.. you can trace it back about ~9 for RADIUS interface to provide >>>>> prefix for a RA. >>>>> >>>>> - Jouni >>>>> >>>>> >>>>>> "deployed at least several years". Few vandor implement their network >>>>>> elements with good support of RA, not mention of the per >>>>>> subscriber prefix from AAA or the RIO. The basic RA works in new network >>>>>> element on 4G PDN gateways in recent one year or so . >>>>> >>> > > _______________________________________________ mif mailing list mif@ietf.org https://www.ietf.org/mailman/listinfo/mif
