Peer-to-peer networking/services & Autonomic Management A report on the work from Group 1

1. Peer-to-peer networking/services & Autonomic ManagementA report on the work from Group 1 Spyros Denazis, Olivier Festor, Burkhard Stiller, Börje Ohlman

2. P2P Systems Considered Features From K. Ross & D. Rubenstein tutorial at INFOCOM’03 • Significant autonomy from central servers • Exploit resources at the edge of the network • Flexibility : • topology control • define your own messages • Protocol independence from the underlying network

3. Autonomic Management Definition Tentative • Acting involuntary (on reflex) according to some predefined policies in order to keep the system up and running within its limits. • Management here includes (but is not limited to) ensure availability and best use of ressources (inculding mitgation), • The rest is competition • Issue : • Difference between management and control is not clear in emerging self-* networks

4. Which aspects of autonomic management are covered by P2P Systems ? For Services built on P2P systems • Configuration • self-configuring, self-organization • Fault management • Fault-tolerant, self-repairing capability in some systems not all (especially healing is not always addressed appropriately). • Survivability features

5. Which aspects of autonomic management are covered by P2P Systems ? For Services built on P2P systems • Performance • scalability properties, by design they have means to exploit in the best possible way the available resources, but • Performance management mostly open today • even if several large services are offered on such networks e.g. zattoo.ch broadcasting a large number of channels

6. Which aspects of autonomic management are covered by P2P Systems ? P2P systems for management • Easiness of configuring/deploying new management & service capabilities • Survivability features for the management plane itself • Dynamically reorganization themselves (expand, integrate new nodes, ...)

7. Which specific problems have been addressed today ? Management of P2P systems • Discovery, organizing & configuring is mature in P2P systems • Accounting schemes (Token based accounting Darmstadt, Peermint Zurich, + some exotic others) • Trust & Reputation mechanisms flourish (see eg: Computer Networks vol 50 issue 4 march 2006). • Overlay optimization / ( P2P/ Overlay/underlay cross layer optimizations still an open issue especially in a multi-domain environment)

8. Which specific problems have been addressed today ? P2P for management • Generic architectural design (commag05) • Interconnection of IPvX with IPvY through P2P approaches (JNSM Stiller, Schoenwaelder, Pras) • Fault management (Madeira EC project) • Resource Management (P2P supported data repository of resource information , Ambient Networks FP6) • Sethi model for response & availability monitoring on a large scale (e.g; porivo)

9. Open IssuesManagement of P2P • Cross layer features remain open • How do P2P networks react in wireless networks with highly fluctuating nodes ? • How to achieve revocation • Performance metrics definition • Security management, i.e. Authentication, Authorization, access control, Confidentiality, Privacy, Non Repudiation, Integrity, need further investigation

10. Open IssuesP2P for management • Has been insufficiently addressed & analyzed vs. Other paradigms • thin P2P layer for the management plane would be useful,e.g. for finding some useful data with simple search facilities, ...