1 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential Session Number Presentation_ID Next Generation Network Architectures Summary John Scudder David Ward

2 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential Session Number Presentation_ID Goal for NGNA Session The network of 10 years from now won’t be the network of today. Our goal for this session is to consider some ideas which may influence what the Internet of the future will be. These ideas include network testbeds, new architectural proposals both incremental and radical, and improvements to existing routing protocols.

3 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential Session Number Presentation_ID Wrap-up Areas of interest from Cisco Input from researchers to Cisco

4 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential Session Number Presentation_ID Problems Cisco would like to see addressed FRR- can classes of service have different repair domains, is hierarchical recovery possible Unicast Multicast MPLS - LDP Convergence - what is really seen on the internet, what is impact on traffic matrix Interdomain Current route flap analysis does not show us the rate at which the internet converges or what causes impact Intradomain Ways to improve leaking across summarization boundaries

5 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential Session Number Presentation_ID Problems Cisco would like to see addressed.2 Addressing schemes Locator vs identity for mobility and V6 Integration of routing and services Content/application server requiring topology awareness for client or domain forwarding Link routing and topology utilization information Experience w/ metric manipulation (dead end)

6 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential Session Number Presentation_ID Problems Cisco would like to see addressed.3 Utility of flow based routing Need quantitative analysis that flow routing gives different routing and service treatment results than per packet Analysis of optimized exit routing Does it solve congestion problems? Does it look at correct parameters? Security Full attack tree of protocols and routers What in routing system needs to be secured? Announcements Src checks at borders for DDOS in interdomain system Multicast join security, faster channel-change Infrastructure based routing security with acceptable cost/benefit tradeoff

7 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential Session Number Presentation_ID Problems Cisco would like to see addressed.4 High availability Analysis of SSO techniques and failure modes What is actual recovery time of forwarding plane (given meshiness of internet) that is visible? Analysis of network design and # of 9’s topology, traffic matrix, service class - uni & multicast Traffic oscillation Do we have other fundamental problems w/ protocols Interdomain convergence causing oscillation Assumptions of Hot-potato routing completely wrong? Given what we have discussed is a better technique to keep packets within a domain as long as possible for guarantees? Interdomain service signaling Across borders or end to end?

8 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential Session Number Presentation_ID Problems Cisco would like to see addressed.5 Ops Can we infer routing policies of peers? Can we infer traffic pattern from routing policy modeling? Cognitive issues in policy languages Event logs and programmable events?

9 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential Session Number Presentation_ID What do you want from Cisco? What new data can we generate that you don’t have that would get us results What new protocol extensions would allow you to tap protocols and/or observe impact of policy? How can we organize ourselves? What does the academic/research community need/want in Cisco routers/software? Do you want to go individual per proposal or as a community?

10 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential Session Number Presentation_ID Opportunities Future routers will have More memory More CPU (cores, GHz, etc) Line-rate tunneling Hooks into higher layers And the kitchen sink What can this enable? What do you want added?

11 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Confidential Session Number Presentation_ID