From KAREN wiki
Comments
Richard Harris
- Interesting comments on Quality of EXPERIENCE (not just Service)
- discussion on efficient network routing to make networks more efficient was useful
- focused less on physical network resilience and instead on services resilience
Aries Hung
- Lots of upgrades in network capacity recently. Moving to an optical network with multiple 10G/E lambdas to support dedicated computational infrastructure.
- Very highly interconnected network - all for supporting ATLAS / LHC experiments!
- As a Tier1 site for the LHC, network tuning has been key - progressive tuning has allowed the network to reach c. 7Gb/s transfer rates.
- This is all being implemented through a grid service - File Transfer Service
- balances underlying grid resources
- monitors problems
- resiience
Kenichiro Minomo
- SINET3 has been upgraded this year - in particular JP-US links from 2.4Gb/s to 10Gb/s. SINET3 has links directly to both LA and NY in the US.
- Future service roadmap for SINET3 is:
- to build on on-demand GMPLS services "bandwidth on demand" at layer 1! - these went straight through the network without hitting the normal swtiching / routing fabric
- deliver QoS, multicast and others. QoS is of particular interest for the Earthquake Research community in Japan. Using VPLS and layer2 QoS to implement.
- IPv6 Multicast - started July 2008 - using IPv6 PIM Source specific Multicast (SSM) and Any-Source Mutlicast (ASM) [all participants in the same ASN, SINET3 domain.
- looking to extend this IPv6 multicast to be multi-ASN capable next year
- SINET3 also gearing up for LHC
- SINET3 hosting a Tier2 site, principally getting data via it's expanded US links, via the Atlantic / GEANT2.
Brent Sweeny and Jin Tanaka
- OC-192 between LA and Tokyo has been renewed
- October networking symposium [http:/www.canscouncil.net]
- Pakistan link also being worked on
- STM-1, via Singapore and TEIN2 router
- FUnded jointly by US NSF and Pakistan's HEC (government)
- Goes around southern india from Singapore into Karachi.
- see http://www.indiana.edu/~pern for more
- DCN - Dynamic Services Network
- allows for dynamically configurable Layer-2 connections
- allows auto-setup and tear-down
- works across domains and with a number of control plane tools, eg Phoebus, DRAGON, LambdaStation, OSCARS
- still in exploratory mode
- http://www.internet2.edu/network/dc/index.html
- early uses are high-volume file transfer for LHC
- end-to-end connections across multiple layer2/3 networks
- See Brent's presentation for a great example on page 9 of how the protocols shift across a DCN service example.
- coming up - adding inter-domain controllers, widening the reach of DCN availability. TransPAC NOC the place to go for information or advice [or the Indiana crew]
- BGP Path hinting - a way of allowing networks to request a certain return path for their traffic (this would be very handy, and avoid some of the crazy custom policies and asymmetric routes that we see)
- proof of concept done early 2008
- may be used with Supercomputing 08 [SC08]
- emergence of DCN really pushing the need for lower-level networking over multiple domains
- Desire to open up each layer of the network, SONET/SDN - IP - Ethernet - L3 to users to allow them to control and choose - the Multi-layer Hybrid Network
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