The above figure shows:

• the Gigabit backbone dedicated to the experimental network, linking all Beamline Gigabit Ethernet switches to the central resources
• the extension to the Machine Control network
• the central Extreme BlackDiamond switches, concentrating all Gigabit links from
  • the peripheral switches (from 2 to 6 Gigabits/sec each)
  • the storage servers from Network Appliance (32 x 10Gbps ports on the main cluster)
  • the secondary Gigabit switches for the compute clusters
  • some computers on the Beamlines requiring a fast access to the storage servers (1 Gigabit/sec each, 10Gigabit/sec on ID15 Beamline)
• the inter-switch links based on multiple 10GBaseLR 10Gigabit Ethernet and 1000BaseLX Gigabit Ethernet over fiber optic
• peripheral Extreme Summit 10/100/1000BaseT Ethernet switches on the Beamlines (level 2 only),
• the uplinks based on dual either 1000BaseLX or 10GBaseLR over fiber optic, linking all Beamline switches to the backbone
• secondary Ethernet switches are linked to the central switch/routers via redundant 1000BaseLX links,
• a computer may be connected to either:
  • an Extreme Blackdiamond main switch (private Ethernet or FastEthernet or Gigabit Ethernet on copper, or Gigabit or 10Gigabit on fiber)
  • an Extreme Summit edge device switch (private Ethernet or FastEthernet or Gigabit Ethernet on copper)