Configuring OSPF and OSPFv3 1187Interconnecting an IPv4 Backbone and Local IPv6 NetworkIn Figure 35-38, two Dell Networking L3 switches are connected as shown inthe diagram. The VLAN 15 routing interface on both switches connects to anIPv4 backbone network where OSPF is used as the dynamic routing protocolto exchange IPv4 routes. OSPF allows device 1 and device 2 to learn routes toeach other (from the 20.20.20.x network to the 10.10.10.x network and viceversa). The VLAN 2 routing interface on both devices connects to the localIPv6 network. OSPFv3 is used to exchange IPv6 routes between the twodevices. The tunnel interface allows data to be transported between the tworemote IPv6 networks over the IPv4 network.Figure 35-38. IPv4 and IPv6 Interconnection ExampleTo configure Switch A:1 Create the VLANs.console(config)#vlan 2,15console(config-vlan70,80,90)#interface te1/0/1console(config-if-Te1/0/1)#switchport mode trunkconsole(config-if-Te1/0/1)#interface gi1/0/1console(config-if-Gi1/0/1)#switchport access vlan 22 Enable IPv4 and IPv6 routing on the switch.console(config)#ip routingconsole(config)#ipv6 unicast-routing3 Set the OSPF router ID.console(config)#router ospfconsole(config-router)#router-id 1.1.1.1console(config-router)#exit
