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Transcript 
Proposal: A new LHCONE core architecture
Gerben van Malenstein
Amsterdam, the Netherlands – December 1-2, 2011
LHCONE Architecture WG
Approach
• Current LHCONE implementation hard to debug,
needs re-design to be future-proof
• Discussion SURFnet, SARA NRG, NL-T1
• This presentation based on proposal sent to
LHCONE architecture working group mailing list:
2 proposals, 1 appendix
• Timelines also TBD,
proposals are on a 2+ year timeline
LHCONE Multipoint Service
Based on hybrid Layer 2 and Layer 3 infrastructure
Connector w/additional switch
Connector
Switching Aggregator
Appendix –
Not a proposal!
Connector
LHCONE Core
Connector
Domain A
Routing Aggregator
Domain B
Connector
Domain C
Connector
Domain D
Connector
Connector
•
Not adding anything essentially new to the existing IP interconnectivity of
the current networks
•
Because of routers present inside the LHCONE core, (new) tiers will not
benefit from the lowest equipment cost, compared to a layer 2 solution
Scenario A
LHCONE Multipoint Service
Based on Shortest Path Bridging
Connector w/additional switch
Connector
Switching Aggregator
Connector
LHCONE Core
Connector
Domain A
Routing Aggregator
Domain B
Connector
Domain C
Connector
Domain D
Connector
•
Connector
Ethernet domain using the IEEE 802.1aq (Shortest Path Bridging) protocol
or the TRILL (Transparent Interconnect of Lots of Links) protocol, possibly
implemented through OpenFlow; Ethernet OAM available
•
Needs feasibility study, research (see Worddoc sent to the list), milestones
LHCONE Point-to-point Service
Based on dynamic lightpaths and NSI
Connector w/additional switch
Connector
Scenario B
Switching Aggregator
Connector
Domain E
NRM
LHCONE Core
Connector
Routing Aggregator
Domain A
Domain B
Domain B
NRM
Domain A
NRM
NSI
Connector
Domain C
NRM
Domain C
Connector
Domain D
NRM
Domain D
Connector
Connector
•
Multiple domains that are connected to each other by Ethernet connections.
On top of this infrastructure, dynamic VLANs enable point-to-point
connections on a per-VLAN basis
•
Network Service Interface (NSI) through Network Service Agent(s) (NSA)
Thank you!
Gerben van Malenstein
[email protected]
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