CCIRN topic: diversity of inter-continental links

Heather Boyles, Internet2heather@internet2.edu

Topic of Coordination for CCIRN?

• Should we as R&E network operators do something about achieving more diversity in our inter-continental links connecting our respective networks?

Issues

• Currently no real coordination between R&E networks in procurement – often not aware of what cables others' links are being

provisioned on– where multiple entities procuring for same route (e.g.

Amsterdam-New York or Tokyo-LA), it could be that all of our circuits are on the same physical cable (even if procured from different vendors)

– move to 'unprotected' circuits from vendors means more relying on backup with each other (e.g. JGN2 and TransPAC2, GEANT and NSF IRNC-funded links)

Questions• Can we get information from vendors about which cable

our circuits are on? (yes, seems to be the answer)– How to capture that information and share?– Are there issues in sharing publicly?

• Can we get those procuring circuits to consider diversity as a desirable feature or a proposal?– At what point in process is this information useful?

• Is it worth the effort? How big of an issue is this?– for routed IP, maybe not: enough multiple interconnections

and open transit in R&E network community that occasionally cable outages don't mean complete unreachability (see the Taiwan straits case from New Year's 2007) - maybe just need more open transit policies, routing coordination

– for circuit services, maybe so: less re-routablity (since not using IP routing)?

GEANT2 and other trans Atlantic links

Courtesy: Guy Roberts, DANTE

LHC OPN Meeting, Munich

Atlantic Ocean

Circuit StatusNYC 111

8th

Pottington (UK)

VSNL South

NY60 Hudson

HighbridgeVSNL North

AMS-SARAAC-2

Bude

GVA-CERN

FrankfurtVSNL

Wal, NJ

London

Global CrossingQwestColtGEANT

NYC-MANLAN

CHI-Starlight

Paris

BellportWhitesands

Unprotected circuits (lower cost) Service availability from provider’s offers:

Colt Target Service Availability is 99.5% Global Crossing guarantees Wave Availability at 98%

Canarie and GEANT: No Service Level Agreement (SLA)

LCG Availability LCG Availability requirement: 99.95%requirement: 99.95%

Courtesy: Dan Nae, CalTech

Vendor Usage in Atlantic• Global Crossing

– SURFnet (1)– IRNC (1) (procured by SURFnet)– Internet2 – CANARIE

• VSNL• IRNC (– IEEAF– GEANT2– LHCnet (one on north, one on south)

• FLAG– GEANT2

• T-Systems– GEANT2

• Qwest– LHCnet (Yellow/AC-2)

Cable Usage in the Atlantic

• VSNL North• VSNL South• AC-2/Yellow• FLAG Atlantic-1 (FA 1)• AC-1– North– South

• TAT14

Pacific Diversity

• George…..