EIGRP Network Design Solutions

Chapter 10. Designing Scalable IPX EIGRP Networks

In the last few chapters, you've seen the issues that can arise when IP EIGRP networks grow too large (Chapter 5, "Scalability Issues in Large Enterprise Networks,"), and several tools can make these networks scalable. Summarization was discussed in Chapter 6, "EIGRP Route Summarization," route filters in Chapter 7, "Route Filters," default routes in Chapter 8, "Default Routes," and route redistribution in Chapter 9, "Integrating EIGRP with Other Enterprise Routing Protocols."

All EIGRP implementations use the same core route calculation mechanism: Diffused Update Algorithm (DUAL). Therefore, it is not surprising that the same scalability issues you saw in IP EIGRP also appear in IPX networks built ...