Economics (==business considerations) *never* come into consideration when IETF 
charters new work in contrast to other sdo's. That has avantages and 
disadvantages. One of the disadvantages is that people can spend years working 
on something only to see that, sadly, people would rather deploy a cheap hack. 
All the money and time invested in the technology development is then wasted. 
I've seen this story played out over and over in IETF, it is only a matter of 
time before companies start to question their investment in IETF.

          jak

            
--------------------------
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-----Original Message-----
From: Mark Townsley <[EMAIL PROTECTED]>
To: Iljitsch van Beijnum <[EMAIL PROTECTED]>
CC: Internet Area <[EMAIL PROTECTED]>
Sent: Fri Oct 12 06:13:32 2007
Subject: Re: [Int-area] DCHP-based authentication for DSL?

Iljitsch van Beijnum wrote:
> On 11-okt-2007, at 22:48, Richard Pruss wrote:
>
>> That would require PANA snooping on every switch that does Option 82 
>> insertion and DHCP snooping today.
>> It would also require a suite of new features on those switches to 
>> filter at the IP layer protocol. Current switches do MAC IP matching 
>> and security features around those two on a per port basis.
>> This is where the PANA proposal breaks down as it requires every 
>> element in the network to change.
>
> I don't think this can be a serious argument against other solutions 
> that DHCP, because EVERY solution requires numerous changes. The fact 
> that adding authentication to DHCP means a little less ISP 
> infrastructure needs to change can't be a reason to reject other 
> solutions out of hand. 
I can promise you that the economic realities of the solution will most 
certainly be part of what the ISP decides to deploy.
> I also don't remember seeing this as a requirement in the list that 
> Mark posted.
One of the requirements was: "IPAuth-6    Must fit into TR-101 
operational model" - while "fit into" is rather subjective, I think the 
spirit here was that the solution shouldn't require major rework to that 
design.
> Especially because a DHCP solution would impose considerable issues on 
> the end-user side. 
Now this is getting closer to what the DSL Forum is asking us. What kind 
of issues do you envision here?

- Mark
>
>
> _______________________________________________
> Int-area mailing list
> [email protected]
> https://www1.ietf.org/mailman/listinfo/int-area
>


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