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X-Original-To: nanog@nanog.org From: Owen DeLong <owen@delong.com> In-Reply-To: <564F923B.9080200@jsbc.cc> Date: Fri, 20 Nov 2015 15:36:46 -0800 To: Jim Burwell <jimb@jsbc.cc> Cc: NANOG <nanog@nanog.org> Errors-To: nanog-bounces@nanog.org > On Nov 20, 2015, at 13:35 , Jim Burwell <jimb@jsbc.cc> wrote: >=20 > Hi, >=20 > Have a simple couple of questions here.=20 >=20 > In my admittedly cursory glances over the DHCPv6 RFCs, I don't see any > reference to the protocol having any role in managing the routing of > prefixes it delegates. Perhaps I missed it, but I somewhat expected = the > omission of this responsibility would be the case. >=20 > My questions are: >=20 > 1) Does the DHCPv6 protocol include any standards/mechanisms/methods = for > managing routes to prefixes it delegates, or does it consider this > outside of its function? (I suspect the latter) Yes and no=E2=80=A6 DHCPv6 doesn=E2=80=99t include anything specifically per se, but it does = require that the local router sees the DHCPv6 PD answer in the process of passing it along to the target, and there=E2=80=99s a pretty obvious expectation = that said router will have to arrange to do the needful in that respect. > 2) What are the most common ways of managing the routing of delegated > prefixes in the ISPs routing domain? Has a standard method/best > practice emerged yet? Routing protocols? IPv6 RAs? RAs really only apply to subnet local advertisement of routers and the on-net prefixes in most implementations. I don=E2=80=99t think any of the various methods of using routing = protocols, static pre-routed blocks from which PDs are delegated, etc. could necessarily be called =E2=80=9Cstandardized=E2=80=9D, but there are = probably a few that are more popular than most of the others. Unfortunately, PD is really still in its infancy in terms of development and real running code for complete implementations throughout any sort of site hierarchy. Owen
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