Hi Laird,
> attributes that it cares about (e.g. latency, throughput,
Would application in fact query for the latency or throughput attributes
or were just some examples ?
I would imagine that actually those two could be measured by the
application directly. In fact the application end to end measurement
would be more accurate as it would include first and last hop links
from/to the servers.
But cost, localization, network/AS preference can not be easily measured
or self produced by the applications and those are where ALTO protocol
does help.
Do we have a list of those attributes already ?
Cheers,
R.
Keep in mind that ALTO doesn't control the applications' peer
assignment - it is a data source that provides guidance into the
application. Ultimately the application uses that information, along
with everything else that it knows, in order to determine its own
optimal peer selection algorithm based on the specifics of the
application.
I would suggest that the application using ALTO should indicate what
attributes that it cares about (e.g. latency, throughput, cost). The
ALTO server can take this into account when providing guidance, if
the ISP (or whoever is running the ALTO server) cares to do so.
- Laird Popkin, CTO, Pando Networks mobile: 646/465-0570
----- Original Message ----- From: "Eric Burger"
<[email protected]> To: "Song Haibin"
<[email protected]> Cc: [email protected] Sent: Tuesday, February 10,
2009 8:52:45 AM (GMT-0500) America/New_York Subject: Re: [alto]
differences among applications
I would offer it is important to have the client specify what it
thinks is important. However, I would also offer it would be fatal to
have "Profile B", "Profile N", "Profile S" selection algorithms,
where B, N, and S are different applications. I will guarantee that
by the time we're done in the IETF, no one will case about those
applications and will have moved on to some other, hot applications.
It may be worth noting what parameters are important.
On Feb 10, 2009, at 7:25 AM, stefano previdi wrote:
On Feb 10, 2009, at 12:43 PM, Song Haibin wrote:
I think it is necessary to discuss whether we need to standardize
different peer selection algorithms according to different types
of applications.
We may want the alto protocol to allow the requester to specify
which type of ranking/preference it needs. Note that this doesn't
mean we need to standardize any algorithm.
s.
Best Regards, Haibin Email: [email protected] Skype:
alexsonghw
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