Rowan Klöti ETH Zurich, Switzerland Research Track Session Part 3 ONS2015: http://bit.ly/ons2015sd ONS Inspire! Webinars: http://bit.ly/oiw-sd Watch the talk (video) on ONS Content Archives: http://bit.ly/ons-archives-sd

3. Communication Systems Group (CSG)
Control Exchange Points: Providing QoS-enabled
End-to-End Services via SDN-based Inter-domain
Routing Orchestration
Vasileios Kotronis1, Xenofontas Dimitropoulos1,2, Rowan Klöti1, Bernhard Ager1
Panagiotis Georgopoulos1, Stefan Schmid3
Monday, 10 March 2014 ONS 2014 Research Track 1
1ETH Zurich, Switzerland, 2Foundation of Research and Technology Hellas (FORTH), 3T-Labs & TU Berlin, Germany

4. Communication Systems Group (CSG)
Have you ever had a bad Skype call?
Monday, 10 March 2014 2ONS 2014 Research Track

5. Communication Systems Group (CSG)
Would you perform a duet over the Internet?
Monday, 10 March 2014 3ONS 2014 Research Track
http://www.internetsociety.org/sites/default/files/pdf/accepted/32_LOLA.pdf

6. Communication Systems Group (CSG)
What about having telesurgery?
Monday, 10 March 2014 4ONS 2014 Research Track
http://news.bbc.co.uk/2/hi/science/nature/1552211.stm

7. Communication Systems Group (CSG)
Possible for a single provider
 An ISP can allocate resources
within their domain
 ISP has full overview of link utilization
 ISP controls the embedding of its
traffic matrix
Monday, 10 March 2014 5ONS 2014 Research Track

8. Communication Systems Group (CSG)
What if the endpoints have different providers?
Monday, 10 March 2014 6ONS 2014 Research Track

9. Communication Systems Group (CSG)
Inter-domain routing limits us
 No end-to-end guarantees for:
 Availability
 Latency
 Bandwidth
 ...
 Current inter-domain routing (BGP) does not allow this
 BGP focuses on reachability, not Quality of Service
 We can’t replace BGP (easily)
Monday, 10 March 2014 7ONS 2014 Research Track

10. Communication Systems Group (CSG)
We propose Control Exchange Points (CXPs)
Monday, 10 March 2014 8ONS 2014 Research Track
*V. Valancius et al. “MINT: a Market for INternet Transit”, In CoNEXT '08
T. Anderson. “Networking as a Service”, HOTI-21 keynote. (2013)
K. Lakshminarayanan et al. "Routing as a service". Tech. Rep. UCB-CS-04-1327 (2004)

11. Communication Systems Group (CSG)
ISPs announce pathlets
Monday, 10 March 2014 9ONS 2014 Research Track

12. Communication Systems Group (CSG)
User requests end-to-end path
Monday, 10 March 2014 10ONS 2014 Research Track

13. Communication Systems Group (CSG)
Controller stitches pathlets together
Monday, 10 March 2014 11ONS 2014 Research Track

14. Communication Systems Group (CSG)
Controller monitors guarantees
Monday, 10 March 2014 12ONS 2014 Research Track

15. Communication Systems Group (CSG)
Controller detects guarantee violations
Monday, 10 March 2014 13ONS 2014 Research Track

16. Communication Systems Group (CSG)
Controller chooses alternative route
Monday, 10 March 2014 14ONS 2014 Research Track

17. Communication Systems Group (CSG)
Best location for CXP data plane anchors?
 Good path diversity
 Maximal coverage of potential users
 Well-connected deployments
 High bandwidth and availability
 Provider neutrality
Monday, 10 March 2014 15ONS 2014 Research Track

18. Communication Systems Group (CSG)
IXPs have the desired properties!
 Internet Exchange Points are public peering points
 They can have hundreds of providers participating
 They exchange up to Tbps of traffic
 They are independent of individual members
 But what about path diversity?
 Coverage?
Monday, 10 March 2014 16ONS 2014 Research Track

19. Communication Systems Group (CSG)
Path diversity and coverage
Monday, 10 March 2014 17ONS 2014 Research Track
Euro-IX: https://www.euro-ix.net/
CAIDA: http://www.caida.org/data/overview/
LINX DE-CIX Frankfurt Terremark AMS-IX
LINX 512 209 51 241
DE-CIX Frankfurt - 516 47 275
Terremark - - 151 48
AMS-IX - - - 629

20. Communication Systems Group (CSG)
Current and future work
 Simulation
 Refinement of path embedding algorithm
 Sensitivity analysis
 Investigate CXP deployment strategy
 Emulation of system
 SDN northbound APIs between ISPs-IXPs and CXPs
 SDX* concept suitable for deploying CXP anchors
Monday, 10 March 2014 18ONS 2014 Research Track
*N. Feamster et al. “SDX: A Software Defined Internet Exchange”, In ONS, (2013).

21. Communication Systems Group (CSG)
Conclusions
 Interdomain Quality of Service
 Control Exchange Points
 Data plane anchors deployed in
IXPs or other peering points
 ISPs offer pathlets between
data plane anchors
 Controller stitches these to
obtain end-to-end tunnels
 Controller monitors and reroutes
 Questions?
Monday, 10 March 2014 19ONS 2014 Research Track

22. Communication Systems Group (CSG)
BACKUP

23. Communication Systems Group (CSG)
Our contributions
 SDN-based model for pathlet routing
 Coexistence with BGP
 Dynamic rerouting possible
 Measurements to ensure guarantees are kept
 Deployment in IXPs
 Simulation of embedding
 Sensitivity analysis
 Analysis of feasability, deployment strategy
Monday, 10 March 2014 21ONS 2014 Research Track