Just-in-time optical burst switching implementation in the atdnet all-optical networking testbed

Abstract

We describe: (i) the architecture of an optical burst switched (OBS) demonstration network overlaying the ATDnet transparent all-optical testbed, and (ii) experiments underway in the testbed. The OBS overlay uses a simple hardware-based protocol embedded in OBS network controllers to manage commercial off-the-shelf DWDM switches. Data paths are all-optical and completely transparent, and can carry analog or digital traffic in any format, data rate, and modulation scheme. Experiments with latency-and jittersensitive HDTV transmission, petabyte file transfers, and immersive real time visualization of satellite imagery over the OBS network are ongoing. Parallel research on transport protocols, QoS-aware routing protocols, adaptors for an OBS LAN, and a network management architecture will be applied as completed. This is the first just-in-time (JIT) OBS field trial known to the authors.

Multi-Granular Optical Cross-Connect: Design, Analysis, and Demonstration

“…In [7], Baldine et al realized an OBS testbed using MEMS OXCs from ATDnet. In [8,9], NTT and Fujitsu demonstrated burst switching with GMPLS-based two-way signaling protocol, utilizing planar lightwave circuit (PLC) and MEMS switches.…”

Adaptive path selection in OBS networks

“…We use the simulator that was developed as part of the Jumpstart project [14]. The simulator accounts for all the details of the Jumpstart OBS signaling protocol [2] that employs the JIT reservation scheme [19], including all messages required for setting up the path of a burst and feedback messages from the network; the Jumpstart signaling protocol has been implemented in a proof-of-concept testbed on the ATDNet [1]. (We emphasize, however, that the path switching strategies we develop and evaluate in this paper are independent of the specifics of the reservation protocol, and can be deployed alongside either the JET or the Horizon reservation schemes.)…”

The SILO Architecture for Services Integration, controL, and Optimization for the Future Internet

“…Building on our experience with the design and prototyping of the Just-in-Time protocol suite [4], [5], [30], we outline a framework consisting of (1) building blocks of fine-grain functionality, (2) explicit support for combining elemental blocks to accomplish highly configurable complex communication tasks, and (3) control elements to facilitate (what is currently referred to as) crosslayer interactions. We take a holistic view of network design, allowing applications to work synergistically with the network architecture and physical layers to select the most appropriate functional blocks and tune their behavior so as to meet the application's needs within resource availability constraints.…”

“…In the third area of research, we deployed JIT prototypes in the ATDNet, a high-performance testbed in Washington, DC [3], [4]. Our team designed, built, and installed proof-ofconcept JIT network controllers at three ATDNet sites as part of an experimental optical burst switching network overlay.…”