The High Performance Network
The HPN is used for the exchange of large amounts of operational
data. Two Arista 7508 Routers, interconnected via 4-way 10-Gigabit
Ethernet aggregated links, provide connectivity between the
High Performance Computing Facility (HPCF) and the
Data-Handling System (DHS). The HPCF network nodes are connected via 10-Gigabit Ethernet and all
DHS nodes via Gigabit Ethernet aggregated links.
The General Purpose Network
The GPN is used for all other traffic. It has at its core two Brocade BigIron RX-16 routers that are interconnected
via 2-way 10-Gigabit Ethernet aggregated links, four SX-800 and two Super-X switches that are dual-attached to the
RX-16s via 10-Gigabit Ethernet. At the edge there are seven further Super-X switches with multiple Gigabit Ethernet
uplinks to the core routers. The GPN provides connectivity to:
- The HPCF,
and additional servers via Gigabit Ethernet ports in the core.
- The user desktops
and laptops via Gigabit Ethernet ports on the edge switches.
- The firewalls (for the Wide
Area Network and the Demilitarized Zone (DMZ) via 10-Gigabit Ethernet ports
in the core. The DMZ includes ECaccess,
web servers, the mail gateway and DNS (Domain Name Servers).
Both Arista 7508 chassis are populated with 96 non-blocking 10-Gigabit-Ethernet
ports. For resiliency there are four power supplies, two CPU modules
and six switching fabric modules.
Both the RX-16 chassis are populated with 12 10-Gigabit Ethernet
ports and 144 Gigabit Ethernet ports. For resiliency there are seven power supplies, two CPU modules
and four switching fabric modules.
The Super-X chassis each contain up to 156 Gigabit Ethernet
ports and dual power-supplies.