Full Abstract

Knowledge of the amount of traffic between source and destination pairs of a network is crucial to fundamental operational tasks such as capacity planning, traffic engineering, and peering management. Router vendors, third parties, academic researchers, and ingenious network engineers have devised multiple ways of collecting and estimating traffic matrices. This session presents an overview of applications of traffic matrices and operational experiences with the various approaches, including Netflow-based methods, mathematical estimation models, and MPLS (both RSVP and LDP) methods. Emphasis will be on practical experiences with each method.

Speakers
Thomas Telkamp, Cariden
Thomas Telkamp is responsible for deploying Cariden products, and guides product development. Previously, he worked for Global Crossing as Director of Network Engineering, Director of IP Global Architecture, and Director of Networking Research. Before joining Global Crossing, Thomas worked as a consultant at AT&T-Unisource Communications Services, SURFnet Expertise Centrum, SURFnet, DANTE and Wunderman Cato Johnson. Thomas' professional interests include network modeling and analysis, traffic characterization and traffic engineering.

Full Abstract

This session demystifies the conceptual issues in moving data across multiple hops. We give an overview of, and contrast the functionality of these technologies, including an overview of link state routing (used in OSPF and IS-IS), spanning tree (used in bridging and switching), distance vector (used in RIP), and path vector (used in BGP).

Speakers
Radia Perlman, Sun
Radia Perlman is a Distinguished Engineer at Sun Microsystems. Some of her contributions to the industry include inventing the spanning tree algorithm used by bridges and switches, and many of the algorithms necessary to make link state routing (IS-IS and OSPF) scalable and robust. She is the author of 'Interconnections' and coauthor of 'Network Security.' She has taught graduate and undergraduate level courses at Harvard and MIT, and is currently an adjunct faculty member of the University of Washington. She has about 60 issued patents, a Ph.D. in computer science from MIT, and an honorary doctorate from KTH, the Royal Institute of Technology of Sweden.

Full Abstract

This tutorial introduces service providers to some more advanced BGP features and techniques to aid with operating their networks within the Internet. After a recap of iBGP, eBGP and common attributes, the tutorial will look at the various scaling techniques available, when to use BGP instead of an IGP, and examine policy options available through the use of local preference, MED and communities. The tutorial then looks at common deployment scenarios as used in ISP networks, before finishing off with some of the newer features available.

Speakers
Philip Smith, Cisco Systems
Philip Smith joined Cisco Systems in January 1998. He is a member of the Service Provider Architectures Group of Consulting Engineering, within Corporate Development. His role includes working with many ISPs in the Asia-Pacific region and the rest of the world, specifically in network strategies, design, technology, and operations, as well as helping with network configuration and scaling. Other areas of interest also include Internet routing, Internet protocols, IPv6, and encouraging the growth of the Internet around the world. Prior to joining Cisco, he spent five years at PIPEX (now part of UUNET's global ISP business), the UK's first commercial Internet Service Provider. He was one of the first engineers working in the UK Internet, and played a fundamental role in building the modern Internet in the UK and Europe. Philip is co-author of 'Cisco ISP Essentials,' published by Cisco Press. He holds a Doctor of Philosophy and has a First Class Honours Degree in Physics. He lives in Brisbane, Australia.

Full Abstract

This tutorial gives a quick overview of the basics of network security, including cryptography, authentication, key distribution, and some web basics. It also talks about what is difficult. The real difficulty isn't the cryptography, but basic system issues, especially considering that people are part of the system. We cover topics such as the functional differences between PKI-based systems and Kerberos-like systems, PKI trust models, and enough cryptography to impress a date.

Speakers
Radia Perlman, Sun
Although Radia Perlman is most well known for her work in bridging and routing protocols, she has also made significant contributions to network security, including sabotage-proof routing, strong password protocols, PKI models, analysis and redesign of the IPsec authentication handshake (IKE), efficient revocation of certificates, and secure deletion of data. Radia is a Distinguished Engineer at Sun Microsystems. She is the author of 'Interconnections' and coauthor of 'Network Security,' as well as being a series editor for Prentice Hall. She has taught graduate and undergraduate level courses at Harvard and MIT, and is currently an adjunct faculty member of the University of Washington. She has about 60 issued patents, a Ph.D. in computer science from MIT, and an honorary doctorate from KTH, the Royal Institute of Technology of Sweden.

Full Abstract

Recently two BGP tools have been released to the public, BGP::Inspect and Link-Rank. The common goal is to make the vast quantities of the University of Oregon's Route Views data easily accesible to the network operator and research community. Link-Rank visualizes BGP routing changes, while BGP::Inspect answers various useful queries, e.g., most active ASes and most active prefixes, as well as prefixes that exhibited the most number of changes in their OriginAS. Roughly half of this BOF will be a tutorial describing the tools' basic functionality and a number of new usage features. The second half offers an interactive hands-on opportunity for interested users to try them out, as well as to collect feedback from the operator community for future improvement. Attendees are encouraged to suggest analysis problems that may have arisen in their work and test whether the tools would be effective in analyzing these events.

Speakers
Manish Karir, Merit Network
Mohit Lad, UCLA
Dan Massey, Colorado State University
Lixia Zhang, UCLA

Full Abstract

Speakers
Betty Burke, Merit Network
Everyone is invited to join us in Seattle for several importanat follow-on meetings to our Las Vegas community meeting. Sunday evening's presentations will provide food for thought for Tuesday, when informal afternoon and evening meetings will give us an opportunity for open community discussion.

Sunday evening: Community Update

Our agenda will include:

1. Merit budget update (Betty Burke)
2. Spring 2005 Program Committee survey results (Steve Feldman, PC Chair)
3. Analysis of previous meeting surveys (Merit)
4. Update on NANOG list-admin activities (Martin Hannigan)
   
   

Tuesday afternoon and evening: Community Dialog On Tuesday afternoon we'll work together to resolve open issues remaining from Sunday evening. By Tuesday evening, we'll be ready to prepare an action plan for next steps to take in the continuing evolution of NANOG.

---

Steve Gibbard's notes from Tuesday's meeting:

Merit had many hours scheduled for discussions on the future of NANOG today. After less than 45 minutes, we agreed to all "declare victory and enjoy a beautiful afternoon."

Mike McPherson, Merit's President, presented Merit's draft of the NANOG bylaw proposal. Merit's draft is quite similar to my version of the NANOG Reform bylaw proposal presented on these lists a few weeks ago, being the same word for word in some places with some differences in others.

Merit invited Steve Feldman, the program committee chair, and Marty Hannigan, who they had somehow decided was a representative of the NANOG Reform group, to comment on it. Steve said the program committee was willing to accept the proposal and that he was glad Merit was now thinking about what NANOG should be. Marty disclaimed representation of the NANOG Reform group (rightly -- he wasn't part of the NANOG Reform proposals), but said he agreed with Merit's proposal too.

As the most recent editor of the NANOG Reform bylaws, I thanked Merit for their proposal, and said I thought it was an improvement over by own.

Various others expressed support for the Merit proposal.

Mitchell Rose expressed a concern that the summary of the Merit proposal on the slides referenced NANOG as an organization for Internet service providers, and appeared to be excluding other large network operators. Merit agreed that this could be changed, but it appears that was wording only in the Powerpoint summary and not in their actual draft.

Vijay Gill said we're all crazy and should just go back to how things were. Nobody seemed willing to publicly agree with him.

Daniel Karrenberg suggested that since we all seemed to be agreeing with each other, we should "declare victory and go home." There seemed to be general agreement with that.

So, it looks like we'll end up with the Merit draft or something pretty close to that, which I think is the right outcome. We should have "steering committee" elections sometime this summer, with the committee in place in time for the fall NANOG. I told Susan Harris that I'd be happy to help with wording as they finalize it. She seemed receptive to that idea.

-Steve

Steve Feldman, CNET
Martin Hannigan, VeriSign

Full Abstract

It appears that anycast illustrates and exacerbates certain types of routing instabilities. We performed a series of measurements on both Planetlab and the internet at large in an effort to better understand the dynamics of routing through the anycast perspective. We found that anycast highlights the fact that routing stability is highly variable depending on network vantage point, with some ASs seeing a wildly varying situation. We also found that routing surveys done using planetlab nodes must be done very carefully if they are to be generalized to the internet at large. Recently, our observations have been validated by RIPE using very different data. By NANOG we hope to also be able to show causes of the varying kinds of instability we have seen.

http://soy.dyndns.org/~peter/projects/research/anycast/nanog/">http://soy.dyndns.org/~peter/projects/research/anycast/nanog/

Speakers
Peter Boothe, University of Oregon
Randy Bush, IIJ

Full Abstract

Intuitively prefixes announced at multiple locations in the BGP topology will have more potential paths than those announced conventionally. Again intuitively this would amplify instabilities inherent in BGP routing as used in the Internet today. The presentation combines measurements of anycasted DNS root service with observations of BGP routing to document the status quo and ask more questions.

Speakers
Daniel Karrenberg, RIPE NCC
Daniel Karrenberg is one of the founders of RIPE and led the establishment of the RIPE NCC, the first of the RIRs; before that he helped to establish EUnet, the first pan-European ISP. Daniel currently serves the RIPE NCC as Chief Scientist; his interests include Internet measurements, the development of the DNS, routing security and the evoloution of what others often call "Internet Governance".

Full Abstract

This presentation describes a method of building multi-host clusters for DNS service using free software. Services are provided on two more hosts, and reachability to a service address is signalled to the rest of the network from each server. In this way the service is anycast within an OSPF area. The F root nameserver is operated by ISC using nameserver clusters constructed in this manner. Issues of service monitoring, troubleshooting, stateful (TCP) transactions and necessarily-unicast, administrative functions (zone transfers, system maintenance) are discussed in some detail. The limitations of the technique with respect to load balancing, the use of other (non-DNS) protocols and operational deployment are also described.

Speakers
Joe Abley, ISC

Full Abstract

Tuesday afternoon and evening: Community Dialog On Tuesday afternoon we'll work together to resolve open issues remaining from Sunday evening. By Tuesday evening, we'll be ready to prepare an action plan for next steps to take in the continuing evolution of NANOG.

---

Steve Gibbard's notes from Tuesday's meeting
From: Steve Gibbard
Subject: Notes from today's NANOG "community meeting"

Merit had many hours scheduled for discussions on the future of NANOG today. After less than 45 minutes, we agreed to all "declare victory and enjoy a beautiful afternoon."

Mike McPherson, Merit's President, presented Merit's draft of the NANOG bylaw proposal. Merit's draft is quite similar to my version of the NANOG Reform bylaw proposal presented on these lists a few weeks ago, being the same word for word in some places with some differences in others.

Merit invited Steve Feldman, the program committee chair, and Marty Hannigan, who they had somehow decided was a representative of the NANOG Reform group, to comment on it. Steve said the program committee was willing to accept the proposal and that he was glad Merit was now thinking about what NANOG should be. Marty disclaimed representation of the NANOG Reform group (rightly -- he wasn't part of the NANOG Reform proposals), but said he agreed with Merit's proposal too.

As the most recent editor of the NANOG Reform bylaws, I thanked Merit for their proposal, and said I thought it was an improvement over by own.

Various others expressed support for the Merit proposal.

Mitchell Rose expressed a concern that the summary of the Merit proposal on the slides referenced NANOG as an organization for Internet service providers, and appeared to be excluding other large network operators. Merit agreed that this could be changed, but it appears that was wording only in the Powerpoint summary and not in their actual draft.

Vijay Gill said we're all crazy and should just go back to how things were. Nobody seemed willing to publicly agree with him.

Daniel Karrenberg suggested that since we all seemed to be agreeing with each other, we should "declare victory and go home." There seemed to be general agreement with that.

So, it looks like we'll end up with the Merit draft or something pretty close to that, which I think is the right outcome. We should have "steering committee" elections sometime this summer, with the committee in place in time for the fall NANOG. I told Susan Harris that I'd be happy to help with wording as they finalize it. She seemed receptive to that idea. -Steve

Speakers
Betty Burke, Merit Network
Steve Feldman, CNET
Martin Hannigan, VeriSign
Marcia Mardis, Merit Network

Full Abstract

Speakers
Betty Burke, Merit Network

Full Abstract

Over the last nine months, Cable & Wireless has rolled out native IPv6 across the whole of the AS1273 backbone. Today, several large customers are using this service. This presentation covers the basic design, the practical experience gained during this rollout, as well as the challenges that needed to be overcome. It provides a collection of useful tips to anyone wanting to roll out production quality native IPv6 services on a global backbone. The rollout also brought to light several issues with the present ad hoc deployment of v6 by the Internet Community at large, and, despite the protocol's age/maturity, the general lack of vendor support. This presentation is therefore also a plea directed at vendors and the Internet community alike to clean up its IPv6 story and support its use in production environments.

Speakers
Udo Steinegger, Cable & Wireless
Udo Steinegger has been working in the Cable & Wireless IP Engineering Group since 2000. He is responsible for designing C&W's public IP network and portions of C&W's MPLS VPN network. Udo's interests focus on MPLS-based technologies (L2/L3 VPNs, carrier-to-carrier interconnections, QoS, etc.), IPv6, and extending/operating C&W's IXP (INXS).

Full Abstract

Much work is being done to provide an IPv6 multihoming solution that doesn't depend on deaggergation. While the draft solutions take into consideration failover and load sharing, they fail to support some of the commonly used inter-AS traffic engineering functions. The presentation is an attempt to provide the three basic inter-AS traffic engineering approaches as a clear example of IPv6 multihoming requirements.

Speakers
Jason Schiller, UUNET
Jason Schiller is a Senior Internet Network Engineer in the IP Network Engineering Department at UUNET / MCI. He has been with the company for over seven years. His current role includes designing, evaluating, and qualifying networks for deployment in UUNET's backbone for the Americas region. Jason also completes field trials and acts as highest level of escalation for issues in the Americas continental networks and for multicast issues globally. He is also responsible for defining and maintaining global standards for each of the continental UUNET networks. Previous projects include designing the UUCast multicast network and the Latin American network. Current interests include Internet routing, multicast, and IPv6.

Full Abstract

This talk is intended to provide an update to the community on the MoonV6 effort covering IPv6 interoperability testing.

Speakers
Scott Gross, MCI

Full Abstract

The Internet currently consists of a well connected core and less well connected spurs. Within the core, connectivity is good. For the rest of the world, areas that relate to the core as long spurs, its a different story. Many different ISPs in these regions have connectivity to the core, but few connect to each other. The connections to the core often extend long distances, sometimes over satellite links. Even local connectivity uses these connections, so data may have to go half way around the world and back in order to go a few miles, leading to great expense and poor performance. While true local communications are vulnerable mainly to problems with fiber links of a few miles, long distance communications are vulnerable to failures of microwave and satellite links going long distances. When local communications are carried on long distance connections, local communications become vulnerable to the reliability problems of long distance circuits. The purpose of this talk is to examine the problems this structure causes for the spur regions of the Internet, and to propose some solutions.

Speakers
Steve Gibbard, PCH
Steve Gibbard is the Network Architect at Packet Clearing House. He runs a global research network and an anycast DNS network that hosts the top level domains for several countries as well as a root DNS server, and studies the interconnection of Internet networks around the world. In addition, Steve carries out network architecture and peering work as a consultant for several ISPs. He is a former Senior Network Engineer at Cable & Wireless, and has held network engineering positions at Digital Island and World Wide Net.

Full Abstract

Currently the inter-domain routing policy of an autonomous system is often ill-specified, undergoes constant adjustments for reasons of traffic engineering and/or to address-specific customer wishes, and is often realized by manually configuring each router individually, an error-prone approach. This talk discusses a system that raises the abstraction level at which routing policies are specified from individual BGP statements to a network-wide routing policy.

Our system enables an autonomous system to:

1. explicitly specify its inter-domain network-wide routing policy as first class entities, an extensible collection of individual policies and services such as a peering-policy, a filter-martians-policy, a signaled black-hole service, etc.;
   
   
2. specify its routing policy independently of the current state of the network;
   
   
3. automatically generate the appropriate pieces of the router configurations for all routers, including various vendors, in the network from appropriate databases;
   
   
4. automatically generate a documentation of the current active routing policy in RPSL;
   
   
5. enable customers of the AS to apply changes to the route-sets they announce without any explicit human-to-human interaction.
   
   

We are now able to manage the overall routing architecture rather than each individual router. Initial deployment of the system to manage the network-wide routing policy of Deutsche Telekom affirms the above advantages in an operational setting.

Speakers
Hagen Boehm, Deutsche Telekom
Anja Feldmann, Technical University Munich
Anja Feldmann is currently a professor of network architectures in the Computer Science department at the Technische Universitaet Muenchen, Germany. From 2000 to 2002 she was a professor of computer networking at Saarland University, Germany. Before that (1995 to 1999), Anja was a member of the Networking and Distributed Systems Center at AT&T Labs -- Research in Florham Park, New Jersey. Her current research interests include Internet measurement, traffic engineering and traffic characterization, network performance debugging, and intrusion detection. She received an M.S. degree in Computer Science from the University of Paderborn, Paderborn, Germany, in 1990, and M.S. and Ph.D. degrees in Computer Science from Carnegie Mellon University in Pittsburgh, USA, in 1991 and 1995, respectively.

Olaf Maennel, Technical University Munich.
Christian Reiser, Technical University Munich.
Ruediger Volk, Deutsche Telekom

Full Abstract

What is next for Ethernet? Vendors are starting to develop new technologies such as 40 GbE and 100 GbE. We're at the point in the industry where operators need to support vendors and build critical mass as the IEEE starts to put out Call for Interests on these technologies. The pros and cons of 40 GbE and 100 GbE are presented, followed by details on what the next steps are for each technology, and how operators can get involved to drive the standards.

Speakers
Subramanian Krishnamurthy, Force10
Subi Krishnamurthy is Director of Technology at Force10 Networks, and has 15 years of experience in silicon design and development. Previously, he was an ASIC Manager in the hardware engineering group and developed three generations of lookup systems for Force10's 10 GbE switch/router platform. At his previous company, Rendition Inc., Subi developed 3D graphics processors for PCs. He holds a B.E. in Computer Engineering from Regional Engineering College, Trichy, India, and an M.S. in Computer Science from Southern Illinois University, Carbondale.

Full Abstract

Speakers
Moderator - Chris Malayter, TDS Telecom
Chris Malayter is a Data Network Engineer at TDS Telecom in Madison, WI. He has held a number of roles at TDS. In his current position, Chris is responsible for designing and engineering the data networks that comprise TDS' Internet business. Chris was a primary player in the recent redesign of the TDS nationwide core network. In addition, he is responsible for all Internet peering activities at TDS Telecom.

Panelist - Celeste Anderson, Pacific Wave
Panelist - Tom Bechly, MCI/MAE
Panelist - Troy Davis, SIX
Panelist - Mike Hughes, LINX
Panelist - Dave Meyer, OregonIX