Download Main SmoothIT objective Motivation Description File Sharing

Overview
Example optimization potentials
Motivation
Main SmoothIT objective
File Sharing (eDonkey)
● Overlay networks generate most
of the traffic in current networks
(around 80%)
● This traffic increases, since more
bandwidth is available in end
nodes
● ISPs aim to control and manage
the network traffic from overlays
to reduce interconnection costs
and to avoid QoE degradation for
end users
To define ETM (Economic
Traffic Management)
mechanisms in interactions
between overlay and
underlay to:
● Reduce ISPs’ costs, thus
enable ISPs to offer lower
prices to end users,
● Improve QoS for overlay
applications.
● Adapting overlay topology to
● Make clients connect to VoD
underlay topology to speed up
servers and other clients
file transfer and to reduce interaccording to underlay infordomain traffic
mation, optimizing ISPs costs
● QoS differentiation taking into
VoIP (Skype)
account multimedia
● For relayed traffic, the
streaming requirements and
selection of appropriate superend users demands
nodes
● Combination of topology
● QoS differentiation for realawareness and QoS differtime applications as an ISP
entation
offer
A new approach for managing overlay traffic
Locality-based pricing
Overlay
● Price differentiation based on
destination addresses
● Users would prefer cheaper
intra-domain traffic over more
costly inter-domain traffic
3. ServiceInvocation = f(IncentiveInfo)
1. InfoRequest =
f(OverlayService)
2. IncentiveInfo =
f(UnderlayTopology)
Underlay
VoD (Joost)
Incentives for different players
End Users
Overlay Providers
● Lower price
● Better QoS
● Higher performance
● Higher reliability
● Higher security
● Lower costs, e.g., for
bandwidth
● Better service for end users
● Efficient use of capacity
ETM
Underlay information
useful for overlay
Overlay
End-User
Overlay Provider
ISP
● Locality of nodes;
performance of a transport
service; path reliability
● ETM elements as a “cross
ISP infrastructure” providing a
special service to evaluate
utility (similar to an enhanced,
sophisticated index server)
Providing incentives to
ISPs and Telcos
ISP’s network
Network element
ETM element
Peer
“ETM capable” Peer
Scenario 1: ISP P2P application
Description
An ISP takes part in a P2P overlay application by offering some
initial resources and letting users contribute in P2P manner.
Users
● Active role in traffic management
● Lower Capital Expenditures (CapEx) and
Operational Expenditures (OpEx)
● Maintain users’ loyalty
Scenario 2: Service provider and ISP collaboration
● Application controlled by a single service provider, which forms a
proprietary overlay network in the backbone
● ISPs offer economic and/or technical incentives to service
providers, if they adapt their overlay topologies according to
optimal traffic management decisions
Index,
Tracker
Users
ISP
Network
Content
Storage
Cache
Service Provider
Point of Presence
(PoP)
P2P traffic is consuming network
resources in the whole network
INTERNET
ISP A (Metro and
access network)
ISP A (Core
IP Network)
ISP B (Core
IP Network)
ISP B (Metro and
access network)
ISP Interconnection
Performance improvement
Due to ISP capability to monitor its network usage, the ISPs tracker
can steer the content distribution process by implementing:
● Locality awareness
● Efficient bandwidth utilization
● Congestion avoidance
User-Server
traffic is not
consuming IP
transit
resources
ISP A (Metro and
access network)
Service Provider
Point of Presence
(PoP)
ISP A (Core
IP Network)
ISP B (Core
IP Network)
ISP B (Metro and
access network)
ISP Interconnection
Juan Pedro Fernández-Palacios Giménez ([email protected]), María Ángeles Callejo Rodríguez ([email protected]), Hasan Hasan ([email protected]),
Tobias Hoßfeld([email protected]), Dirk Staehle([email protected]),
Zoran Despotovic([email protected]), Wolfgang Kellerer([email protected]),
Konstatin Pussep ([email protected]), Ionna Papafili ([email protected]), George D. Stamoulis ([email protected]),
Burkhard Stiller([email protected])