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Interconnect SIP networks using P2P SIP. Marc Bailly [email protected] Interconnection using P2P SIP. Use case of P2P SIP technology One way to interconnect (not the only one) Hierarchical architecture concept. Hierarchical P2P.

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Presentation Transcript
interconnection using p2p sip
Interconnection using P2P SIP
  • Use case of P2P SIP technology
  • One way to interconnect (not the only one)
  • Hierarchical architecture concept

IETF 64

hierarchical p2p
Hierarchical P2P
  • Proposed in section 6.4.1 of Singh\'s and Henning\'s paper
  • Why not use some specific principles such as those proposed in paper "Hierarchical P2P systems" :
    • In the top-level overlay network, each "node" is a set of peers.
      • Require adaptations to Chord (for example) to manage groups instead of nodes
      • Super peers of each group may fail independently

IETF 64

interconnection using p2p sip1
Interconnection using P2P SIP

Domain1.com

A

D

C

Domain2.com

B

IETF 64

example
Example
  • User A in domain1.com wants to join a B in domain2.com:
    • Local lookup service of domain1 is used to locate one of the peers of the local domain which belongs to the top level DHT (node C),
    • Signalization is proxied to one of the gateway node of domain2.com (node D). This node is located thanks to the top level DHT lookup mechanism,
    • This node D uses the local lookup service of the callee\'s network (domain2.com) to locate the callee.

IETF 64

top level dht
Top level DHT
  • Used for inter-domains routing
  • Two main approaches for routing:
    • The set of nodes responsible for a domain joins this DHT with a random ID and register their domain on KeyID = HASH(domain.com)
    • The set of nodes responsible for a domain joins this DHT with the ID = HASH(domain.com)
  • We would prefer the second approach:
    • Takes heterogeneity of domains size into account
  • Maybe extend this model with several levels in the P2P SIP DHT.

IETF 64

advantages
Advantages
  • offers standardized interconnection to isolated islands in a P2P way
  • does not prevent from using optimized P2P layer protocol (in a specific environment : mobile or wifi network)
  • does not prevent from using P2P SIP in a domain
  • does not prevent from connecting centralized networks
  • enables to have ad-hoc realms (eventually just one UA)

IETF 64

what s next
What\'s next?
  • Are people interested in this ?
  • Comments/Discussion ?

IETF 64

references
References
  • SIPPEER: A Session Initiation Protocol (SIP)-based Peer-to-Peer Internet Telephony Client Adaptor, Kundan Singh and Henning Schulzrinne
  • Hierarchical P2P Systems, L. Garcés-Erice, E. W. Biersack, P. A. Felber, K. W. Ross and G. Urvoy-Keller
  • A Dependable Global Location Service using Rendezvous on Hierarchic Distributed Hash Tables, J. Risson, T. Moors and A. Harwood

IETF 64

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