Re: draft-baker-6man-multiprefix-default-route-00.txt is a newdraft

Hi Fred,

El 12/11/2007, a las 14:39, Fred Baker escribió:

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> On Nov 12, 2007, at 12:27 PM, marcelo bagnulo braun wrote:
>
>> AFAIU, you are essentially proposing to perform source address  
>> based routing by the hosts and by the routers in a multiprefix  
>> site, is that correct?
>
> I don't like the term, because I first do a destination lookup and  
> only look up the source address in certain cases.

i understand that it is done when the destination is off site and  
there are multiple routes to the external destination. So in a  
regular multihomed site that accept default routes from each ot its  
ISPs, basically, source address dependent routing is performed for  
all packets with an external destination, right?

> Kind of like the previous comment on source routing, which in IEEE  
> 802.5, DSR, and RFC 791 IP means that the source specifies all or  
> part of the routing path. I think the term mis-states the case.
>

agree, that is why i normally use Source address dependent routing  
instead of source routing

> But yes, in certain cases where there is a multipath route, the  
> point is that if the datagram is handed to the wrong ISP and the  
> ISP is doing ingress filtering, the datagram will be dropped, and  
> hence I suggest that we direct it toward the right ISP.

right

>
> Is there something wrong with that?

i don't know....

I have proposed a very similar thing in http://tools.ietf.org/id/ 
draft-ietf-shim6-ingress-filtering-00.txt

but it got quite some push back and we finally dropped it from the  
shim6 wg. I would be interested to continue working on this,

regards, marcelo

> Would you prefer it be dropped as it leaves the site? Would you  
> prefer that the matter be indeterminate?
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