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Next Generation Abilene. Steve Cotter Director of Network Services, Internet2 June 21, 2005 Ann Arbor, MI. Internet2’s Advanced Networking Goals. Provide high-performance, cost-effective network infrastructure for the U.S. research universities and the affiliated community

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next generation abilene

Next Generation Abilene

Steve Cotter

Director of Network Services, Internet2

June 21, 2005

Ann Arbor, MI

internet2 s advanced networking goals
Internet2’s Advanced Networking Goals
  • Provide high-performance, cost-effective network infrastructure for the U.S. research universities and the affiliated community
  • Advance the state of network capabilities - architecture, end-to-end performance, and innovative services
  • Contribute to the concurrent evolution of advanced regional and campus networking
  • Facilitate network research through infrastructure access and collaborations with computer science faculty
  • Support national and international R&E collaboration
abilene next gen network futures
Abilene Next-Gen Network Futures
  • October 2007 - End of recent 1-year Abilene transport MoU extension
    • Sets next-generation network planning timeline
      • Architecture definition: 1/1/2006
      • Transport selection: 4/1/2006
      • Equipment selection: 7/1/2006
      • Backbone deployed: 1/1/2007
      • Connector transition: 2007
    • Concurrently, review overall business plan and management model
    • Network design time frame: 2007-2012/2014
  • Note that ESnet transport agreement with Qwest Federal is on similar time line - December 2007
  • HOPI testbed is expected to be in place for 2-3 years, to experiment with future protocols
    • Refine and evolve next generation architecture
next gen abilene architecture requirements
Next-Gen Abilene Architecture Requirements
  • Provide uncongested data transport via:
    • IP packet switching
    • Dedicated capacity
      • Duration, Reliability, Capacity
  • Provide simplified connectivity to:
      • Research and education community in the US
      • Other national networks
      • International research and education networks
      • Potential for commodity network peering
  • Work within architectural constraints
    • Standard hierarchy: national, regional, campus
      • Expansion to additional layers (4-7) if necessary
    • Must be capable of evolving to support new features
      • Dynamic provisioning to some degree
      • Hybrid models for data networking
hopi testbed resources
HOPI Testbed Resources
  • The Abilene Network – MPLS tunnels and the packet switched network (BRUW project)
  • The Internet2 Wave on the NLR footprint
  • MAN LAN Exchange Facility
    • TYCO/IEEAF 10 Gbps lambda NYC – Amsterdam
    • Nortel and Cisco optical and Ethernet equipment
  • Collaborations with Regional Optical Networks (RONs) and other related efforts (GLIF, DRAGON, etc.)
  • A 10 Gbps circuit between NYC and London
    • Provides experimental capabilities between Internet2 and GEANT
  • Other facilities as they become available
next gen network overview
Next-Gen Network Overview

Looking at all options:

  • New business model, organizational structure
  • Believe the NLR infrastructure will play a significant role in the future network
  • Taking into consideration the RONs and their capabilities
  • Closely watching emerging technologies and their potential impact on the landscape
next gen network requirements view
Next-Gen Network Requirements View
  • Initial backbone capacity requirement is expected to be at least 100Gb/s (10x10G)
    • 10G (OC-192, 10GE) services are of primary interest with some 2.5G connectivity, and a path forward to 40Gb/s
  • Plan to offer dynamic services to the R&E community
    • Community is asking for the network as a schedulable resource
    • Provide 1G to 10G services on a hourly, weekly or monthly basis
    • Offer large and flexible pipes between any Internet2 connector/member locations
  • Require 99.99% service availability
  • Also investigating 40G or 100G transport
the basic next gen backbone design
The Basic Next-Gen Backbone Design

In the beginning:

  • Provide a carrier-grade, IP packet-switched core
  • Provide dedicated capacity using accepted framing techniques


  • Evolving to a network that provides dynamic capabilities and hybrid networking
  • Ability to create point-to-point dedicated data paths from deep within a campus to deep within another campus

This dedicated capacity:

  • Might be a 1 to 10 GigE path
  • Might be OC-48, OC-192 or OC-768 SONET
  • Every effort will be made to use a framing technology that provides convenient connectivity to the regional optical networks or international networks that connects to the backbone
  • May eventually include raw analog waves
generic next gen footprint
Generic Next-Gen Footprint

Basic component will be ITU grid waves that interconnect nodes on a national fiber footprint

  • Expected to be at least 10 and as many as 40
  • Bandwidth of each wave expected to be 10 Gbps (and possibly 40 Gbps)
connections to the next gen backbone
Connections to the Next-Gen Backbone

Through an optical interconnecting device that serves 3 purposes:

  • Provides a client interface
  • Provide access to waves on the network
  • Offer the ability to provide sub channels on a wave
    • i.e. Ethernet VLANs, SONET paths
the next gen abilene to ron interface
The Next-Gen Abilene to RON Interface

The interface to the backbone:

  • One or more client interfaces to the optical interconnects
  • It is expected that a router sit behind the optical interface within the RON’s optical infrastructure
items needing further investigation
Items Needing Further Investigation

Verify all Internet2 service and network requirements

  • Bandwidth forecast – is 100G the right number?
  • Is dynamic provisioning and full routing flexibility still a critical requirement?
  • What interfaces are required for Day 1 operation?

Network Availability

  • We’re assuming a core IP service will still need to be carrier class
  • What availability is required for the dynamic waves?

What are the services the community will need in the future?

  • Group A Report
  • Are there others?

Access Methodology

  • What locations has / should the community build into? Carrier-neutral hotels? NLR nodes? Both?
  • Can / how do we help extend the transport footprint to the RONs and eventually the campuses?
details needed before completing the design
Details Needed Before Completing the Design


  • What is the footprint?
  • Where are the switching nodes located?
  • What provides the switching at the switching nodes?
  • What is the backhaul footprint the RONs can provide and how can we supplement that?
  • What is the framing? This determines the RON (and other networks) service offering.


  • Where are the optical interconnects located? The RONs and connectors will determine the sites.
  • What are the optical interconnection devices and how will they function.
  • What is the service offering? This is partly determined by framing – could use GFP, LCAS, and VCAT.
  • How will network security be handled?