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Re: [p2pi] WG Review: Application-Layer Traffic Optimization (alto)

"Woundy, Richard" <Richard_Woundy@cable.comcast.com> Thu, 23 October 2008 20:24 UTC

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From: "Woundy, Richard" <Richard_Woundy@cable.comcast.com>
To: <nweaver@ICSI.Berkeley.EDU>
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Subject: Re: [p2pi] WG Review: Application-Layer Traffic Optimization (alto)
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>Well, you use the last-hop resolver

That makes more sense. :)

In our network, we have a number of clusters of caching DNS servers. Two customer computers in the same geography may happen to use different caching servers in the same cluster. Two computers in different geographies may use different caching clusters.

-- Rich


----- Original Message -----
From: Nicholas Weaver <nweaver@ICSI.Berkeley.EDU>
To: Woundy, Richard
Cc: Nicholas Weaver <nweaver@ICSI.Berkeley.EDU>DU>; p2pi@ietf.org <p2pi@ietf.org>
Sent: Thu Oct 23 15:43:04 2008
Subject: Re: [p2pi] WG Review: Application-Layer Traffic Optimization (alto)


On Oct 23, 2008, at 12:32 PM, Woundy, Richard wrote:

>> The question is the simpler coordinate: "who's MY resolver and who  
>> else uses it".
>
> This is an interesting idea.
>
> One perhaps obvious thought. I wouldn't use the IP address as the  
> sole identifier of the DNS resolver. Lots of hosts on different  
> networks are likely to use 192.168.x.1 as their DNS resolver, eg  
> their home gateway. :)

Well, you use the last-hop resolver, by looking at the address from  
the authoritative server side, not from the client side.

eg, query
server.nettest.icir.org

The answer is the recursive resolver which contacted our DNS server.   
(well, when our experimental server is running that is)


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