Connect. Communicate. Collaborate Global On-demand Light Paths – Developing a Global Control Plane R.Krzywania PSNC A.Sevasti GRNET G.Roberts DANTE TERENA Networking Conference ‘08, Brugge, Belgium,

Connect. Communicate. Collaborate AutoBAHN is… … a research activity for engineering, automating and streamlining the inter-domain setup of guaranteed capacity (Gbps) end-to-end paths … a Joint Research Activity of the GN2 project –GN2 is an European Commission-funded project, with all the European Research and Education networks (NRENs) as partners

Connect. Communicate. Collaborate AutoBAHN approach Control and provisioning has to be distributed Business-layer related interactions include AA, policies, advance reservations etc. Privacy and control of intra-domain resources must be safeguarded

Connect. Communicate. Collaborate AutoBAHN architecture

Connect. Communicate. Collaborate AutoBAHN experiences Jun 2007 Nov 2007 Jan 2008 Apr th GN2 Workshop – AutoBAHN prototype demo SC’07 – 1 st AutoBAHN & DCN demo 5 th GN2 Workshop – Fully operable European AuoBAHN demo Internet2 Spring Meeting – Fully operable AutoBAHN & DCN demo

Connect. Communicate. Collaborate GEANT2 Workshop June 2007 Demonstration Three domains are involved: –GRNET and HEAnet interconnected through GEANT2 links AutoBAHN is in prototype phase –IDM functionality is near completed –DM functionality is emulated

Connect. Communicate. Collaborate GEANT2 Workshop June 2007 Demonstration The system assumes that it has full control over network resources within domain Domains are able to exchange abstracted resources view Inter-domain pathfinder enables searching for available resources within AutoBAHN cloud (local domain search was pre-defined manually and fixed) Reservations can be set for future execution (advance reservation feature) Single reservation requests are grouped under service instance

Connect. Communicate. Collaborate GEANT2 Workshop June 2007 Demonstration Calendar module allows to schedule reservations in advance

Connect. Communicate. Collaborate GEANT2 Workshop June 2007 Demonstration The live demonstrations of AutoBAHN have sped up the development process providing feedback to the development. It opens NRENs for cooperation, so that important input of requirements and suggestions could be taken into consideration The number of NRENs involved in test and demonstration environment is increased More NRENs declares its interest to join the AutoBAHN cloud Reservation time can not be easily estimated. The highest delay is introduced by Alcatel NMS and associated domain resource management tool (up to 4 minutes).

Connect. Communicate. Collaborate GEANT2 Workshop June 2007 Demonstration Lessons learned –The DM implementation is strongly dependant on local domain network management model and procedures –The DM needs to be extended with dedicated tools to collaborate with existing management applications used within domains –Exceptional situations were encountered during testing, and preventing/reacting actions must be defined and implemented –Network configuration time depends on domain technology and capabilities (e.g. NMS efficiency) and must not be ignored

Connect. Communicate. Collaborate GEANT2 Workshop June 2007 Demonstration

Connect. Communicate. Collaborate AutoBAHN experiences Jun 2007 Nov 2007 Jan 2008 Apr th GN2 Workshop – AutoBAHN prototype demo SC’07 – 1 st AutoBAHN & DCN demo 5 th GN2 Workshop – Fully operable European AuoBAHN demo Internet2 Spring Meeting – Fully operable AutoBAHN & DCN demo

Connect. Communicate. Collaborate SuperComputing’07 demonstration On November 2007 AutoBAHN is presented on SuperComputing’07 event European test environment is interconnected with USA part Dedicated IDC protocol is defined and implemented to assure interoperability of AutoBAHN and DCN systems

Connect. Communicate. Collaborate SuperComputing’07 demonstration

Connect. Communicate. Collaborate SuperComputing’07 demonstration 4 European domains involved Attempt to collaborate with alternative system Attempt to automatically connect two continents Phoebus infrastructure deployment Cyclic durability test

Connect. Communicate. Collaborate SuperComputing’07 demonstration IDM is improved and enhanced with IDC capability DM is implemented and enable control of network resources (with assist of domain dedicated tools) Deployment of domain resource management tools in all involved NRENs in Europe – GRNET, HEAnet, and PSNC/PIONIER, DANTE/GEANT2 The interoperability with ESNet and Internet2 clouds is enabled Phoebus infrastructure is deployed as a client for BoD systems

Connect. Communicate. Collaborate SuperComputing’07 demonstration IDC protocol –Defined by AutoBAHN and DCN team to enable interoperability of BoD systems –Web Services based messages exchange –Contains: Topology exchange details Reservation related requests/responses –Scheduling –Signalling

Connect. Communicate. Collaborate SuperComputing’07 demonstration IDC protocol – Topology elements –Minimal set of toplogy exchange elements Domains Nodes Ports Links –Domain privacy and policy Only the abstracted topologies are available to public and is exchanged between systems Real data (interface names, etc.) may be hidden or missing depending on abstraction level and policy

Connect. Communicate. Collaborate SuperComputing’07 demonstration

Connect. Communicate. Collaborate IDC protocol – Path definitions SuperComputing’07 demonstration SRC and DST points only SRC and DST with some intermediate points All points on the path

Connect. Communicate. Collaborate SuperComputing’07 demonstration Synchronous vs. Asynchronous communication model for inter-domain connections –AutoBAHN implements asynchronous communication as communication delays and resource processing can not be arbitrary defined –DCN implements synchronous communication, which leaded to waiting for request responses between Europe and USA –The reservation time in Europe requires all resources to be configured and put into operational state, which may take up to 4 minutes. –DCN may consider timeouts and reservation failures if response waiting periods were defined too short.

Connect. Communicate. Collaborate AutoBAHN experiences Jun 2007 Nov 2007 Jan 2008 Apr th GN2 Workshop – AutoBAHN prototype demo SC’07 – 1 st AutoBAHN & DCN demo 5 th GN2 Workshop – Fully operable European AuoBAHN demo Internet2 Spring Meeting – Fully operable AutoBAHN & DCN demo

Connect. Communicate. Collaborate Demonstration on GEANT2 Workshop January 2008 Multiple parallel connections between end points was supported by data plane Domains resource management is fully automated and performed without administrator attention

Connect. Communicate. Collaborate Demonstration on GEANT2 Workshop January 2008

Connect. Communicate. Collaborate GEANT2 Workshop Jan’08 Lessons learnt Domains are not keen to show too much details of their topology. In some cases it should be limited just to domain edge points (Ingress/egress points and links to clients) MPLS domains topology is seen as a cloud, and limited management capabilities are supported through available NMS’

Connect. Communicate. Collaborate GEANT2 Workshop Jan’08 Lessons learnt Alcatel NMS do not allow easily to control the resources at very low level Issues with usage of local NMS pathfinding for advance reservation (pathfinding is done with current state, as no calendar is available)

Connect. Communicate. Collaborate GEANT2 Workshop Jan’08 Lessons learnt That leads to modification of initial AutoBAHN assumption of having explicit and full control over network resources –Domains may be represented in very simplified way (abstraction process), even as a single node –NMS may be considered to have „unlimited” resources and control resources basing more on policy, rather than tracking network status –Abstraction process should be modified and new methods of resource management at DM level must be introduced

Connect. Communicate. Collaborate AutoBAHN experiences Jun 2007 Nov 2007 Jan 2008 Apr th GN2 Workshop – AutoBAHN prototype demo SC’07 – 1 st AutoBAHN & DCN demo 5 th GN2 Workshop – Fully operable European AuoBAHN demo Internet2 Spring Meeting – Fully operable AutoBAHN & DCN demo

Connect. Communicate. Collaborate Internet2 Spring Meeting 2008 demonstration

Connect. Communicate. Collaborate Internet2 Spring Meeting 2008 demonstration

Connect. Communicate. Collaborate Internet2 Spring Meeting 2008 demonstration IDC protocol improvements in features and stability Hazard situations are limited and IDM/DM stack handles most failure situations Phoebus infrastructure is used to request circuits and generate traffic QinQ support due to Phoebus requirements Constant, long term durability testing on automated circuit set up and tear down 7 domains involved on European site: CARNet, CESNET, GARR, GEANT2, GRNET, HEAnet, PIONIER

Connect. Communicate. Collaborate Internet2 Spring Meeting 2008 demonstration – Lessons Learnt Reservation states incompatibility –SCHEDULED state is missing in DCN design. New features are requested for IDC functionality –Modify reservation –Find possible reservation time

Connect. Communicate. Collaborate The AutoBAHN team

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