Module 2- Configuring EIGRP in an Enterprise Network | CCNP -BSCI Bachkhoa Networking Academy Objectives Upon completing this lesson you will be able to describe recognize and correct common EIGRP issues and problems. This ability includes being able to meet these objectives Explain factors affecting scalability in large internetworks Explain how EIGRP uses queries to update its routing tables in the event a route is lost and there is no feasible successor Explain how to mark the spokes of large network as stubs to reduce EIGRP queries and thus improve network scaling Explain why SIA connections occur Explain how to minimize active routes Describe how graceful shut down prevents loss of packets when routers go down SCI Cisco Systems Inc. All nghts Học viện mạng Bách Khoa - 2 2006 Cisco Systems Inc. All rights reserved. 1 CCNP - BSCI Bachkhoa Networking Academy Purpose of this Lesson Coverage of topics new to the EIGRP module of BSCI. What s new in this module -Configuring EIGRP in large scale enterprise networks 5CI 2008 Cisco Systems Inc. All ng CCNP - BSCI Học viện mạng Bách Khoa - 3 Bachkhoa Networking Academy Factors That Influence EIGRP Scalability Quantity of routing information exchanged between peers without proper route summarization this can be excessive. Number of routers that must be involved when a topology change occurs. Depth of topology the number of hops that information must travel to reach all routers. Number of alternate paths through the ne 5CI 2008 Cis ms Ii- All ng Học viện mạng Bách Khoa - 2006 Cisco Systems Inc. All rights reserved. 2 CCNP - BSCI Bachkhoa Networking Academy EIGRP Query Process Queries are sent when a route is lost and no feasible successor is available. The lost route is now in active state. Queries are sent to all neighboring routers on all interfaces except the interface to the successor. If the neighbors do not have their lost-route information queries are sent to their neighbors. 5 If a .
