ATLAS Tier 2 Paths Within ESnet Mike O’Connor ESnet Network Engineering Group Lawrence Berkeley National Lab moc@es.net

ATLAS Tier 2 Connectivity Typical ATLAS tier 2 site connectivity should be via Abilene and ESnet in order to reach Brookhaven Lab. “ESnet’s Goal is that DOE Lab ↔ Univ. connectivity should be as good as Lab ↔ Lab and Univ. ↔ Univ.” W. E. Johnston Speaking to the ATLAS tier 2 sites. Assuming that your institute has attained sufficient connectivity to the Abilene network, I will discuss how these paths through the ESnet are engineered today and the options that exist for the future.

ATLAS Tier 2 Support The role of ESnet is to provide networking that supports and anticipates the needs of the Office of Science Labs and their collaborators. ESnet support for ATLAS tier 2 site connectivity makes high bandwidth and fault tolerant paths between BNL and Abilene an absolute priority. Planning is underway to upgrade BNL’s ESnet OC48 circuit to a multi 10G lambda fault tolerant Metropolitan Area Network (MAN). (Targeted for Q1 2006) Today ESnet and Abilene peer in Atlanta, Chicago, New York and Sunnyvale with a combined bandwidth of 18.2Gbps.These four locations comprise a high bandwidth and fault tolerant interconnect between these two networks.

ESnet Provides Global High-Speed Internet Connectivity for DOE Facilities and Collaborators (Spring, 2006 Configuration) Japan (SINet) Australia (AARNet) Canada (CA*net4 Taiwan (TANet2) Singaren SINet (Japan) Russia (BINP) GÉANT - France, Germany, Italy, UK, etc CA*net4 France GLORIAD (Russia, China) Korea (Kreonet2 MREN Netherlands StarTap Taiwan (TANet2, ASCC) PNWGPoP/ PAcificWave CERN (USLHCnet CERN+DOE funded) ESnet Science Data Network (SDN) core SEA LIGO MAN LAN Abilene PNNL ESnet IP core Starlight CHI-SL NYC MIT Abilene AU INEEL Chi NAP LVMR-NOC BNL JGI Abilene FNAL LLNL Lab DC Offices LBNL AMES ANL PPPL SNLL NERSC SNV CHI MAE-E SLAC PAIX-PA Equinix, etc. NREL OSC GTN NNSA Equinix SNV SDN BECHTEL-NV KCP JLAB NASA Ames DC ORNL YUCCA MT OSTI ORAU LANL MAXGPoP ARM ATL SDSC SNLA NOAA AU GA Abilene SRS ALB Allied Signal ESnet IP core: Packet over SONET Optical Ring and Hubs PANTEX SoXGPoP DOE-ALB South America West ELP South America East International (high speed) 10 Gb/s SDN core 10G/s IP core 2.5 Gb/s IP core MAN rings (≥ 10 G/s) OC12 ATM (622 Mb/s) OC12 / GigEthernet OC3 (155 Mb/s) 45 Mb/s and less 42 end user sites international R&E peers Office Of Science Sponsored (22) commercial and R&E peering points NNSA Sponsored (12) Joint Sponsored (3) IP SDN ESnet core hubs Abilene Other Sponsored (NSF LIGO, NOAA) high-speed peering points with Internet2/Abilene Laboratory Sponsored (6)

ESnet & Abilene Peering points *paths do not include all router hops **Example site logos chosen at random.

Abilene Routing Toward ESnet Abilene Interior Gateway Protocol (IGP) mileage based metrics determine the best exit path toward the ESnet. This common method also known as “hot potato routing” it will always compute an exit path to the nearest peering point.

ESnet Routing Toward Abilene Abilene Multi Exit Discriminators (MEDs) are used by ESnet to choose the best exit path toward Abilene. These MEDs are based on the same IGP metrics used in the interior of their network. This creates a symmetric path back to Abilene.

32 Avenue Of the Americas NYC

Chicago

Current Load in Chicago

Sunnyvale & Atlanta

Future Directions Long Island MAN Ring ESnet Lambda Infrastructure

Circuits based on WDM rings ESnet LI MAN Ring 2 λs (10 G circuits) delivered as two 10 GigEther circuits 8 X current BNL bandwidth Physically diverse fiber paths forming a ring topology. Will be used as a10 Gb/s production IP and a10 Gb/s path for SDN circuit services Services switch over to the other service path during a circuit failure. λ2 SDN/circuit Circuits based on WDM rings 10 Gb/s optical channels λ1 production IP *SDN – Science Data Network

ESnet 2010 Lambda Infrastructure and LHC T0-T1 Networking TRIUMF Vancouver CERN-1 CANARIE Seattle Toronto CERN-2 Boise CERN-3 BNL Chicago Clev New York Denver Sunnyvale KC Pitts GÉANT-1 FNAL Wash DC Raleigh LA Albuq. Tulsa Phoenix GÉANT-2 San Diego Atlanta Dallas El Paso - Las Cruces Jacksonville NLR PoPs Pensacola Houston Baton Rouge ESnet IP core hubs San Ant. ESnet Production IP core (10-20 Gbps) ESnet Science Data Network core (10G/link) (incremental upgrades, 2007-2010) Other NLR links CERN/DOE supplied (10G/link) International IP connections (10G/link) ESnet SDN/NLR hubs Tier 1 Centers Cross connects with Internet2/Abilene New hubs

Conclusions ESnet provides an infrastructure and services that are critical to ATLAS science ESnet is well positioned to provide essential network services to the LHC tier 2 community ESnet is working on providing the DOE mission science networking requirements with several new initiatives and a new architecture