In the hot-potato settlement-free peering world of today, there is an expectation that all peers play & advertise routes equally. However, in reality, some settlement-free peers may attempt to short cut and modify advertisements resulting in you hauling traffic a bit farther than needed. This presentation looks at ways this is done today, some specific examples of this as well as other interesting things you can learn by examining routes received (but maybe not accepted) at all points in a network.
About the Presenters
Tom Scholl is a Senior Technical Consultant in the global IP core network design & routing group in AT&T Labs. He works on network design and routing architecture as well as the SBC network integration. Tom has spent his last several years at what was SBC and prior to that, Ameritech. When not working, Tom can be found on IRC discussing routing, networking hardware and the NINAF protocol.
Aman Shaikh is a member of Network Performance and Engineering Department at AT&T Research where he works on IP route monitoring and several projects related to IP routing. His general research interests lie in the areas of IP routing and network management. Aman obtained his Ph.D. and M.S. from University of California, Santa Cruz. His home-page can be found at http://www.research.att.com/~ashaikh
Richard Steenbergen is the Co-Founder of nLayer Communications, where he currently serves as Chief Technical Officer and devotes a significant amount of time to the strategic management of peering relationships. Previously, he served as a Sr. Network Engineer for several large NSPs, and was the Sr. Software Engineer responsible for developing optimized routing technologies at netVmg, Inc.
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