Re: [p2pi] Information in an ALTO protocol

This raises at least two issues:

> Playing devil's advocate, while ALTO doesn't provide a mechanism for ISP A
> to tell non-customers anything, but it is possible for the p2p network 
> as a whole to make decisions based on information provided by ALTO. For 
> example, if ISP A says that its users have bad uplink, and ISP B says 
> that its customers have great uplink, then the rest of the internet will 
> tend to download more from ISP B than A.

(1) Do ISPs have an incentive to lie to their customers that their uplink 
is bad?

This will be counter-balanced 
> in that if, in practice, ISP A has fine uplink, the p2p network will 
> figure that out and use those peers anyway, ignoring the misleading ALTO 
> guidance, because observed behavior has (IMO) more 'weight' than ALTO 
> guidance.

(2) Do P2P applications must determine if an ISP ALTO server is lying?

Note, that misconfiguration can also be a cause of ALTO server providing 
misleading information.

-s

>
> ----- Original Message -----
> From: "Richard Woundy" <Richard_Woundy@cable.comcast.com>
> To: "Reinaldo Penno" <rpenno@juniper.net>, "Laird Popkin" <laird@pando.com>
> Cc: p2pi@ietf.org
> Sent: Thursday, September 11, 2008 2:52:06 PM (GMT-0500) America/New_York
> Subject: RE: [p2pi] Information in an ALTO protocol
>
>> I was wondering if he was assuming some kind inter-ALTO communication.
>
> I guess I was. And perhaps Laird's points address my ISP traffic
> management concerns -- I'm willing to concede.
>
> Still worried about user privacy, though.
>
> -- Rich
>
> -----Original Message-----
> From: p2pi-bounces@ietf.org [mailto:p2pi-bounces@ietf.org] On Behalf Of
> Reinaldo Penno
> Sent: Thursday, September 11, 2008 2:31 PM
> To: Laird Popkin; Woundy, Richard
> Cc: p2pi@ietf.org
> Subject: Re: [p2pi] Information in an ALTO protocol
>
> That was going to be my observation to Rich's point as well. I was
> wondering
> if he was assuming some kind inter-ALTO communication. But even if
> existed
> it would not be Internet wide.
>
>
> On 9/11/08 11:26 AM, "Laird Popkin" <laird@pando.com> wrote:
>
>> The other issue is that ALTO is anticipated to be used by ISPs to
> provide
>> guidance to their own users. ALTO can't provide guidance to customers
> of other
>> ISPs. So ISP A cannot tell the rest of the internet to pull data from
> ISP B
>> but not ISP A.
>
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