A company wants to switch from static routing to a dynamic routing protocol to ease the administrative and operational overhead. The network topology is hub and spoke, and the branches use DMVPN…

eBGP can be overly complex for internal network routing in a hub-and-spoke setup and might consume more resources at branch routers than EIGRP stub.

EIGRP is highly suitable for DMVPN hub-and-spoke networks due to its fast convergence and ease of configuration. Configuring branch routers as stub routers limits their routing table size and processing overhead, satisfying the limited resources requirement. Enabling variance allows for efficient unequal cost load balancing across the two 10-Mbps internet connections, maximizing bandwidth utilization and providing flexible path selection. EIGRP is also now an open standard, ensuring multivendor compatibility.

ISIS is a robust routing protocol but EIGRP with stub and variance offers more specific features tailored to the DMVPN hub-and-spoke design with unequal cost path requirements.

OSPF with stub areas would limit routing tables, but OSPF primarily supports Equal Cost MultiPath (ECMP), which is less effective for load balancing across potentially unequal 10-Mbps internet connections than EIGRP's variance feature.