Re: [DNA] Question regarding prefix assignment

[Sathya Narayanan <sathya@research.panasonic.com>]

JinHyeock -

I guess the issue is with the on-link flag setting, right? The cpl draft assumes either 'on-link' or 'addrconf' flag or both MUST be set for cpl to work. 

But is it possible for a PIO with the 'on-link' flag NOT set (A - bit set) to be advertised on two separate links? The X in Tero's diagram will be the router that advertises prefix A on both the links without setting the on-link flag, and there will be another router on the left link that advertises prefix B with on-link flag set. Is that a feasible scenario? If yes, how often is it really done?

thanks,
Sathya 
----- Original Message -----
From: "Tero Kauppinen (JO/LMF)" <tero.kauppinen@ericsson.com>
Date: Tuesday, March 8, 2005 11:52 am
Subject: Re: [DNA] Question regarding prefix assignment

> Hi JinHyeock,
> 
> JinHyeock Choi wrote:
> 
> > Let me clarify the above
> > 
> > When the routers send an RA advertising both A & B, the RA 
> > will be forwarded both through AP1 and AP2. Right?
> > 
> > If so, that means that AP2 advertise the prefix B which is not 
> > supported in that (L2) link. I don't think that is valid.
> 
> That is what I would think also, but because I'm not sure I'm asking.
> 
> However, I guess the above scenario is possible if X is some sort 
> of a 
> firewall. Please, don't ask whether it makes any sense to have 
> such a 
> scenario nor who would use such a configuration because I don't 
> have a 
> clue. :)
> 
> Br,
> 
> Tero
> 
> > 
> > Best Regards
> > 
> > JinHyeock
> 
>