Control System Network • Requirements • Development Network • Operations Network • Physically • Logically • Technology • Schedule

Background Ideas LCLS will have 30 year lifetime Best equipment now will be obsolete in 5 years Invest in Infrastructure which allows expansion More complex than current EPICS networks for SLC or SPEAR Not a typical “enterprise network” Need bandwidth between IOCs for fast feedback or localized control, not just to central “server” The servers are in the field, and clients are centralized (although we have centralized boot and file servers)

Four Subnets

Development Subnet

Access allowed only from Access Subnet Operations Network Must be able to operate LCLS if network is disconnected from SLAC or Internet Able to stand alone, must have servers Must have machines to run EPICS clients Access allowed only from Access Subnet SSH Servers, Web Servers EPICS Gateway Servers Offline Data Cache Servers

Operations Network Must also support access from the existing SLC network for SLC-aware IOCs (SAI). A proxy server on the SLC network must have access to all SAIs on the operations network SAIs must also be fully accessible from the operations network, as would any normal IOC.

The Ideal Network

Star Configuration

Fiber to Every Third Area

Distribution Layer

Physical Layout

Private IP Address Ranges Class A 10.0.0.0 to 10.255.255.255 Class B 172.16.0.0 to 172.31.255.255 Class C 192.168.0.0 to 192.168.255.255 Operations Network, Class A Not because of the number of nodes allowed, but because we can better organize and classify

Private IP Address Range Class A Operations Network Format is 10.10.X.Y 10.10.20.Y - Node on the Injection Subnet 10.10.21.Y - Node on the subnet for Sector 21 10.10.30.Y - Node on the subnet for Sector 30 10.10.33.Y - Node in Undulator Hall 10.10.35.Y - Node in Front-end Enclosure 10.10.100.Y - Node in Fast Feedback Subnet 10.10.120.Y - Node in LLRF Subnet for Injector

Physical Hardware 2 x Cisco 6509 (MCC) Stackable; rear panel cabling allows 32 Gb/sec Interconnect 36 x Cisco 3750

Schedule This was a first attempt given known dates

Schedule (v2)

Network Overview