Hi all:
I am wondering if we need hierarchical PID structure to facilitate
P2P tracker to organize its peers. As I know in some current P2P
applications, they organize the peers into a hierarchical structure
according to its location.
Best
China Telecom Guangzhou Institute
Syon Ding
2009/7/16 Richard Alimi <[email protected]>:
> Hi Antonio,
>
> Thank you very much for reading the draft and your feedback. See below:
>
>> I found a new version of draft-penno-alto-protocol
>> (draft-penno-alto-protocol-03.txt) and I have a question about it.
>> Since an ALTO Server presents to ALTO clients its "my--Internet View",
>> it may be reasonable for this view to be accurate in describing "near"
>> Network Locations and being less and less accurate when we move away
>> from them. So my question is: is there a way to represent "the rest of
>> the world"?
>> It seems, reading section 6.3.2.2, that every endpoint is mapped to a
>> PID (since there's nothing like a 404 "No PID for the endpoint" response
>> available), so we may group all the "far" networks we have few
>> information about ("the rest of the world") within a PID. The problem
>> with this approach would be how to answer to a Reverse PID Property
>> Lookup on such a PID (enumerating all network maps of far networks?).
>> Have you already addressed this issue?
>
> When mapping from IP addresses into PIDs, an ALTO Client can use longest-
> prefix matching. This will be stated explicitly in the next revision of the
> document.
>
> Thus, the "rest of the world" can be represented simply as the 0/0 IP prefix.
> The prefix can be assigned to either an existing PID (along with other
> prefixes), or allocated to its own PID. This is indeed what we have done in
> the P4P tests.
>
> For example, the ALTO Server's reply from Reverse PID Property Lookup can
> including the following mappings:
>
> PID1: 128.36.0.0/16 130.132.0.0/16
> ...
> PIDDEFAULT: 0.0.0.0/0
>
> --
> Richard Alimi
> Department of Computer Science
> Yale University
> _______________________________________________
> alto mailing list
> [email protected]
> https://www.ietf.org/mailman/listinfo/alto
>
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