Transcript CCIRN topic: diversity of inter

CCIRN topic: diversity of intercontinental links
Heather Boyles, Internet2
[email protected]
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
Courtesy: Dan Nae, CalTech
Circuit Status
NYC 111
8th
Bellport
NYC-MANLAN
Bude
Whitesands
AC-2
AMS-SARA
VSNL North
VSNL
NY
60 Hudson
Highbridge
Frankfurt
GVA-CERN
Wal,
NJ
CHI-Starlight
VSNL South
Paris
Pottington (UK)
Atlantic
Ocean
London
Global Crossing
Qwest
Colt
GEANT
Unprotected circuits (lower cost)
LCG Availability
requirement: 99.95%
 Service availability from provider’s offers:
 Colt Target Service Availability is 99.5%
 Global Crossing guarantees Wave Availability at 98%
LHC OPN Meeting,
Munich
 Canarie
and
GEANT: No Service Level Agreement (SLA)

Vendor Usage in Atlantic
•
Global Crossing
–
–
–
–
•
VSNL
•
–
–
–
•
SURFnet (1)
IRNC (1) (procured by SURFnet)
Internet2
CANARIE
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…..