Title :
Network resiliency implementation in the ATLAS TDAQ system
Author :
Stancu, S.N. ; Al-Shabibi, A. ; Batraneanu, S.M. ; Ballestrero, S. ; Caramarcu, C. ; Martin, B. ; Savu, D.O. ; Sjoen, R.V. ; Valsan, L.
Author_Institution :
Univ. of California at Irvine, Irvine, CA, USA
Abstract :
The ATLAS TDAQ (Trigger and Data Acquisition) system performs the real-time selection of events produced by the detector. For this purpose approximately 2000 computers are deployed and interconnected through various high speed networks, whose architecture has already been described. This article focuses on the implementation and validation of network connectivity resiliency (previously presented at a conceptual level). Redundancy and eventually load balancing are achieved through the synergy of various protocols: link aggregation, OSPF (Open Shortest Path First), VRRP (Virtual Router Redundancy Protocol), MST (Multiple Spanning Trees). An innovative method for cost-effective redundant connectivity of high-throughput high-availability servers is presented. Furthermore, real-life examples showing how redundancy works, and more importantly how it might fail despite careful planning are presented.
Keywords :
data acquisition; position sensitive particle detectors; routing protocols; ATLAS TDAQ system; MST; Multiple Spanning Trees; OSPF; Open Shortest Path First; VRRP; Virtual Router Redundancy Protocol; cost-effective redundant connectivity; link aggregation; network resiliency implementation; trigger-and-data acquisition; IP networks; Load management; Redundancy; Routing protocols; Servers; Throughput;
Conference_Titel :
Real Time Conference (RT), 2010 17th IEEE-NPSS
Conference_Location :
Lisbon
Print_ISBN :
978-1-4244-7108-9
DOI :
10.1109/RTC.2010.5750373
