Figure 1 shows the network topology that is used for configuring EIGRP for IPv6. If the network is running dual-stack, using both IPv4 and IPv6 on all devices, EIGRP for both IPv4 and IPv6 can be configured on all the routers. However, in this section, the focus is solely on EIGRP for IPv6.

Only the IPv6 global unicast addresses have been configured on each router.

Figures 2, 3, and 4 display the starting interface configurations on each router. Notice the interface bandwidth values from the previous EIGRP for IPv4 configuration. Because EIGRP for IPv4 and IPv6 use the same metrics, modifying the bandwidth parameters influences both routing protocols.