Chapter 5. Scalability Issues in Large Enterprise Networks
Many customers who deploy EIGRP in their small networks are surprised to learn that EIGRP cannot scale forever without the network's design being taken into account. Quite a few of these networks have no network management whatsoever (or network management might be limited to monitoring link up/down status), so the starting symptoms of potential network meltdown are often overlooked, and the network manager reacts only when it's too late—when the network is gone and the phones start to ring.
This chapter introduces the EIGRP scalability issues by presenting a poorly designed network that grew until it melted down. The concept of query boundaries, which is crucial to EIGRP scalability, is ...
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