Dependability of IP networksThis web site contains results and
events by series of Finnish research projects on dependability of IP
network. The current project "GOODNET - control and care in risk-aware
networking" is funded by the Finnish Technology Agency, Tekes and is a
joint research project with Helsinki Institute for Information
Technology, HIIT and Technical Research Centre of Finland, VTT.
The first project on dependability started at VTT in November 2005, called "Dependability evaluation methods for IP networks", IPLU (IP-verkkojen
luotettavuuden arviointimenetelmät). The IPLU project aimed to
create a conceptual framework for assessing the complex
problem "Can one rely on IP technology?" The follow-up project IPLU-II (2007-2008) was part of Tekes'
GIGA program. The current project GOODNET will be completed in 2012.
Journal and conference publications:L. Norros, I. Norros, M. Liinasuo, and K. Seppänen.. Impact of human operators on communication network dependability. Cognition,
Technology and Work - Online
First. Springer (2012), 1-10.
P. Chołda, E. Følstad, B. Helvik, P. Kuusela, M. Naldi, and I. Norros.. "Towards risk-aware communications networking",
Reliability Engineering & System Safety, Volume 109, January 2013, Pages 160-174.
(http://www.sciencedirect.com/science/article/pii/S0951832012001627) (Author's preprint)
Norros. On/Off Process Modeling of IP Network Failures. IEEE/IFIP International Conference on Dependable Systems
& Networks (DSN 2010).2010. pages 585 - 594. (Conference paper is available from IEEE Xplore Digital
Kilpi. Enabling distributed fault diagnosis in multicast-based IPTV
delivery. Quality of Experience for Multimedia Content Sharing, QoEMCS
at EuroITV 2010. ( Long version of the presented paper )
J. Kilpi. IP-Availability and SLA.
International Workshop on Traffic Management and Traffic Engineering
for the Future Internet (FITraMEn 08).
Porto, Portugal, December 2008.
P.Kuusela and P. Savola. A Dependability Case Approach to the
Assessment of IP networks. The First International Workshop on
Dependability and Security in Complex and Critical Information Systems (DEPEND2008),
August 2008. (Conference paper is available from IEEE Xplore Digital
Library, direct link to pdf; available only here: Extended version.)
Ilkka Norros, Urho Pulkkinen and Jorma Kilpi. Downtime-frequency
curves for availability characterization. The 37th Annual IEEE/IFIP
International Conference on Dependable Systems and Networks (DSN2007), June 2007.
I. Norros. A broad approach to the dependability of IP networks. European
CIIP Newsletter 2:3 (2006).
J. Kilpi and S. Varjonen. Minimizing Information Loss in Sequential Estimation of Several Quantiles. Preprint.
I. Norros, P. Kuusela, J. Lapuyade-Lahorgue and M. Naldi. On reliability modeling with stationary on/off processes. Submitted for publication.
Reports produced by the projects:
On the dependability of IP networks.
Results of the IPLU-II project
An executive summary of IPLU-II, August 2009.
Jorma Kilpi: Enabling distributed fault
diagnosis in multicast-based IPTV delivery
A report of the IPLU-II project, August 2009.
Pirkko Kuusela, Ilkka Norros and
Pertti Raatikainen: Report on modeling reliability of an IP-network and
strategies for improving the reliability
A report of the IPLU-II project, June 2009.
Nousiainen, Jorma Kilpi, Paula Silvonen and Mikko Hiirsalmi: Anomaly
detection from server log
data. A case study.
A study originated and partly financed within IPLU. Reference: VTT
Research Notes 2480, 2009.
Pirkko Kuusela: Case study:
Reliability of MPLS
IPLU-II project case study on reliability of MPLS multicast, May 7, 2008
Pertti Raatikainen: Cost to
build dependable all-IP networks
A report of the IPLU-II project, December 2007
The dependability of an IP network - how to
The final report of the IPLU project, January 9, 2007
Pertti Raatikainen: Next Generation Network
A report produced by the IPLU project, January 1, 2007
Kari Seppänen: Resiliency in
Ethernet Based Transport Networks
A report produced by the IPLU project, October 30. 2006
The dependability of an IP network –
what is it?
A baseline paper of the IPLU project, May 16, 2006
Dependability case of Funet's core
first testing of dependability case methodology on Funet's core
network. This is not ment to be a proper dependability assessment, but
we have attempted to consider all relevant aspects and formulate
respective subclaims and argumentation that could be found to support
them. This prelimanary case points to a way how to proceed
towards a more thorough investigation (with more hard data available).
The dependability case methodology itself is described in
the paper "A Dependability Case Approach to the Assessment of IP
Networks", see above. html-version of the
A talk on the Dependability
Case of Funet's Core Network given in NORDUnet 2008 conference.
Events organized by projects:GOODNET-projektin päätösseminaari
The final seminar of GOODNET-project, October 19, 2012.
The final seminar of IPLU-II on April 24, 2009
Annual seminar of IPLU-II on February 8, 2008
IPLU's final seminar on February 2, 2007
Dependability of All-IP
A multidisciplinary workshop organized by IPLU on May 18-19, 2006
- mitä se on?
A public seminar organized by IPLU on May 17, 2006 (in
Ilkka Norros, VTT