LHCOPN - Large Hadron Collider Optical Private Network
WLCG Tier0-Tier1 Private Network
The LHC Optical Private Network (LHCOPN) is a dedicated high-performance IP network connecting the Tier-0 center at CERN with Tier-1 data centers worldwide. Designed to support the massive data volumes generated by the Large Hadron Collider (LHC) experiments, LHCOPN provides not only direct Tier-0 to Tier-1 connectivity, but also interconnectivity among Tier-1 sites for data replication and distribution. The network leverages dedicated optical infrastructure, with link capacities ranging from 10 Gbps to 400 Gbps, ensuring reliable, low-latency, and high-throughput data transfers across the global WLCG ecosystem.
KISTI’s Global Science Experimental Data Hub Center (GSDC) operates a Tier-1 center for the ALICE experiment at the Large Hadron Collider (LHC). The GSDC is connected to CERN via the GLORIAD network with a dedicated 20 Gbps link, enabling reliable, high-throughput data exchange to support global scientific workflows.
LHCONE - Large Hadron Collider Open Network Environment
LHCONE is a dedicated network designed to enhance data transfer performance among LHC Tier-1, Tier-2, and Tier-3 centers. It is implemented as a separate routing domain using Virtual Routing and Forwarding (VRF) technology, and is operated as an L3VPN.
* LHCONE topology map: https://twiki.cern.ch/twiki/bin/view/LHCONE/LhcOneMaps