P4P or pure AS caching.
~J
On Dec 4, 2008, at 7:50 AM, [EMAIL PROTECTED] wrote:
P2P locality seems to me a red herring since most major ISPs:
have markets in several countries and geographic areas
lease physical facilities or IP networks from and to other ISPs; a
very complex mapping
keep their L2 and L3 network maps and leasing costs very secret for
competitive reasons.
Having worked many years for a leading ISP with global reach, I
guess locality would have seemed hard to define to our team.
Unless the p2p protocol measures the latency, bandwidth and the
number of IP hops itself.
I have not seen any protocol that can also measure ownership of
links by ISPs and numbers of hops between ISPs, their $$$ costs and
populate the routing table with such metrics.
Please share if you know such a technology.
Henry
On 12/4/08 6:22 AM, "Stevens Le Blond" <[EMAIL PROTECTED]
> wrote:
Hello,
We are glad to advertise our new paper called "Pushing BitTorrent
Locality to the Limit." In this paper, we run controlled torrents
with
up to 10,000 peers to evaluate the impact of locality on inter-ISP
links traffic and peers download completion time (See abstract
below).
Stevens Le Blond, Arnaud Legout, Walid Dabbous.
"Pushing BitTorrent Locality to the Limit".
Technical Report (inria-00343822, version 1 - 2 December 2008),
INRIA,
Sophia Antipolis, December 2008.
http://hal.inria.fr/inria-00343822/en/
Comments are welcomed.
Best regards,
Stevens Le Blond
Peer-to-peer locality has recently raised a lot of interest in the
community. Indeed, whereas peer-to-peer content distribution enables
financial saving for the content providers who do not have to
maintain
a dedicated infrastructure, it dramatically increases the traffic on
inter-ISP links.
To solve this issue, the idea to keep a fraction of the peer-to-peer
traffic local to each ISP was introduced a few years ago. Since then,
peer-to-peer solutions exploiting locality have been
introduced. However, several fundamental issues on locality still
need
to be explored. For instance, how far can we push locality for a
peer-to-peer distribution without impacting its robustness?
In this paper, we perform extensive experiments on a controlled
environment with up to 10,000 peers to evaluate the impact of
locality
on inter-ISP links traffic and peers download completion time. In
particular, we show that high locality values enable up to two orders
of magnitude saving on inter-ISP links without any significant impact
on peers download completion time.
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