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. 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. 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. - 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
