On 2011-12-02 10:36, Lorenzo Colitti wrote:
> On Thu, Dec 1, 2011 at 13:33, Brian E Carpenter <brian.e.carpen...@gmail.com
>> wrote:
>
>>> Like AAA? That is used and will be used a lot for address & prefix
>> management, and can also be used for distributing per subscriber route
>> information.
>>
>> I stand corrected - the point is that AAA is centrally managed and tied
>> to subscriber info. RA is neither in any present implementation that I'm
>> aware of.
>
>
> That's not true. I have personally designed a network that used layer 2
> information (VLAN tags) to cause a router to look up a prefix in RADIUS
> that it would then send out in an RA for hosts on that VLAN to do SLAAC.
> That's both centrally managed and tied to subscriber info.
If you're using VLANs you are operating multiple LANs as far as IP
is concerned, so this is not really solving the problem of heterogeneous
hosts on the same LAN.
I have to say that using VLANs in low-end networks is very similar to
attaching booster rockets to a pig that refuses to fly. Surely we (the
IETF) should be aiming to solve this problem at L3?
I'm not saying that the RA architecture can't be enhanced to support
this - for example by describing a stateful RA server - but that
really would end up looking awfully like a DHCPv6 server in all but
protocol details.
Brian
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