Download - Esnet Atlas Tier2
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ATLAS Tier 2 Paths WithinESnet
Mike OConnor
ESnet Network Engineering Group
Lawrence Berkeley National Lab
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ATLAS Tier 2 Connectivity Typical ATLAS tier 2 site connectivity
should be via Abilene and ESnet in orderto reach Brookhaven Lab.
ESnets Goal is that DOE Lab Univ.connectivity should be as good as Lab
Lab and Univ. Univ.W. E. Johnston
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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 highbandwidth and fault tolerant paths between BNL and Abilene anabsolute priority.
Planning is underway to upgrade BNLs ESnet OC48 circuit to amulti 10G lambda fault tolerant Metropolitan Area Network (MAN).(Targeted for Q1 2006)
Today ESnet and Abilene peer in Atlanta, Chicago, New York andSunnyvale with a combined bandwidth of 18.2Gbps.These fourlocations comprise a high bandwidth and fault tolerant interconnectbetween these two networks.
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ESnet & Abilene Peering points
*paths do not include all router hops**Example si te logos chosen at random.
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Abilene Interior Gateway Protocol (IGP) mileage basedmetrics 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 peeringpoint.
Abilene Routing Toward ESnet
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ESnet Routing Toward Abilene
Abilene Multi Exit Discriminators (MEDs) are used by ESnetto choose the best exit path toward Abilene. These MEDs arebased on the same IGP metrics used in the interior of their
network. This creates a symmetric path back to Abilene.
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32 Avenue Of the Americas NYC
ESnet
PeeringRouter
MANLAN
ESnet CoreAOA (NYC)
Abilene
OC48DC
OC192CHI
1GE
10GE
10GE
2GE
Peerings@MANLANnysernet 3754abilene 11537sinet 2907geant 20965
BNLOC48
The MANLAN peering is the primary path from ESnet to Abilene atAOA. The directly connected 1Gbps peering is a secondary
failover connection.
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Chicago
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Current Load in Chicago
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Sunnyvale & Atlanta
ESnet and Abilene have direct OC48 peerings in Atlanta
GA and Sunnyvale CA.
ESnet CoreSunnyvale CA
Abilene
OC192
CHI
OC48
ESnet CoreAtlanta GA
Abilene
OC48
OC48
DC
OC48
El PasoTX
OC48
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Future DirectionsLong Island MAN Ring
ESnet Lambda Infrastructure
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MANLANAbilene
GEANT
Manhattan Long IslandIP Coreto Chicago
IP Core to DC
111th & 8 th
BNL
60 Hudson
32 AOA
2 SDN/circuit
1 production IP
10 Gb/soptical
channels
2 s (10 G circuits)delivered as two 10GigEther circuits
-8 X current BNL
bandwidthPhysically diverse fiberpaths forming a ringtopology.
Will be used as a10 Gb/sproduction IP and a10 Gb/spath for SDN circuitservices
Services switch over to the
other service path during acircuit failure.
ESnet LI MAN Ring
Circuits based onWDM rings
*SDN Science Data Network
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ESnet 2010 Lambda Infrastructure and LHC T0-T1 Networking
Denver
Seattle
Sunnyvale
LA
San Diego
Chicago
Pitts
Raleigh
Jacksonville
At lanta
KC
Baton Rouge
El Paso -Las Cruces
Phoenix
Pensacola
Dallas
San Ant .Houston
Albuq. Tulsa
New YorkClev
Boise
CE
RN-1
GANT-1
GANT-2
Wash DC
CERN-2
Tier 1 Centers
ESnet IP core hubs
New hubs
ESnet SDN/NLR hubsESnet Production IP core (10-20 Gbps)ESnet Science Data Network core (10G/link)(incremental upgrades, 2007-2010)Other NLR linksCERN/DOE supplied (10G/link)International IP connections (10G/link)
Cross connects with Internet2/Abilene
NLR PoPs
TRIUMF
FNAL
BNL
CERN
-3
Vancouver
Toronto
CANARIE
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Conclusions
ESnet provides an infrastructure and servicesthat 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
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