NANOG Meeting Presentation Abstract

Introduction to Fast Convergence with Bidirectional Forwarding Detection (BFD)
Meeting:	NANOG39
Date / Time:	2007-02-07 11:30am - 12:00pm
Room:	Osgoode Ballroom
Presenters:	Speakers: Aamer Akhter, Cisco Systems Aamer Akhter, joined Cisco Systems, Inc. in 1998 after graduating from Georgia Tech with a Bachelor's of Science in electrical engineering. After joining the Technical Assistance Center (TAC), he has worked in various capacities for cisco supporting large service provider and enterprise customers, as well as testing, designing and deploying several large Layer 2 and MPLS/VPN networks. Mr. Akhter is currently working as a technical marketing engineer in the areas of Network Virtualization, Wan-Optimization and router instrumentation. He is CCIE number 4543.
Abstract:	Bidirectional Forwarding Detection (BFD) is becoming a must deploy feature for fast failure detection not only in internet access solutions but even more in hosted VPN services. BFD is for detecting faults in the bidirectional path between two forwarding engines with very low latency. This presentation will cover the motivations behind BFD, similar technologies, and the problems that BFD is supposed to solve (and not solve). Additionally, the application of BFD to various topologies (shared, point to point, sub-interfaces) and technologies (eg, Gracefull-restart) will also be covered. An in-depth look of the packet flow for various types of BFD will be provided as well as sample configurations. The design of BFD is meant facilitate implementations tightly coupled with hardware, and therefore, various implementation design patterns will be discussed (ie distributed platforms etc).
Files:	Bidirectional Forwarding Detection (BFD) Bidirectional Forwarding Detection (BFD) Presentation(PDF)
Sponsors:	None.

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