Running lifecycle experiments over SDN-enabled OF@TEIN testbed

Flow-centric Visibility Tools for OF@TEIN OpenFlow-based SDN Testbed

“…With the above resources and inter-connections of OF@TEIN, it is important to allow the developers to conveniently go through all stages of lifecycle experiment for designing, provisioning, executing, monitoring, and finishing their experiments [1]. As depicted in Fig.…”

“…Thanks to the open and programmable nature, the emerging SDN (Software-Defined Networking) paradigm has motivated the construction and operation of SDN-enabled testbeds over international R&E (research and education) networks. Aligned with Future Internet testbed projects like GENI and FIRE, in 2012, we launched OF@TEIN project [1] to build an OpenFlow-based SDN testbed over TEIN (Trans-Eurasia Information Network). As of now, OF@TEIN is operating in 8 sites across 7 countries (i.e., Korea, Indonesia, Malaysia, Vietnam, Thailand, Philippines, and Pakistan).…”

Prototyping Media Distribution Experiments over OF@TEIN SDN-enabled Testbed

“…Based on the example from GENI experiment lifecycle [4], the specific design of OF@TEIN lifecycle experiment is proposed with some modifications by dividing resource provisioning and experiment execution stages and by adding detailed tasks with specific workflow for each stage. Fig.…”

“…As mentioned above, in order to have faster execution time and provide automatic execution, the resource provisioning uses the DevOps combination of Chef [6] installation/configuration and script-driven experiment execution [4]. Chef is effective in repeating the same installation/configuration based on Ruby [7]-written recipes from cookbooks, which can transform SmartX Rack nodes into ready-to-be-utilized resources.…”

“…The operator then receives the alarm report from the user. In response to the report, the operator executes automated resource checking and recovery with the Chef-based installation/configuration [4].…”