Hi Thomas,
On 10-08-26 08:50 PM, Thomas Narten wrote:
Let me ask some additional clarification questions.
Figure 1 contains both Hosts and RGs (residential gateways).
Is it a requirement that there be a single RG at each customer site,
and that RG then connects to the AN?
In other words, is the Edge Router sending RAs only to the RG, and is
it the RG that is sending RSes?
There are two scenarios.
Case 1: The RG is a router. In this case the Edge router sends RAs only
to the RG.
Case 2: The RG is a bridge. In this case the Edge router sends the RAs
directly to the hosts.
Or, is the RG optional, and can one (or more Hosts) connect directly
to the AN?
From a Layer 3 perspective, Case 2 above looks like the host connects
directly to the AN.
(I'm trying to understand who the Edge Router needs to send unicast
RAs to, and how it can keep track of who it needs to send such packets
to. It would be considerably easier to do this if there was only one
device per customer. But if the customer may just be bridged to the AN
and Edge Router without having its own router at the edge, things
would seem more complicated, and an Edge Router would need to send
multiple unicast RAs to each customer site -- one for each device on
customer site!!!)
You are absolutely right. Earlier versions of this draft (without
tunneling) allowed solicited multicast RAs to be tagged with the LIO and
sent downstream to the AN.
Thanks
Suresh
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