There are some notable differences in the configuration of EIGRPv4 and EIGRPv6 in Cisco IOS software. The first notable difference is the way in which the routing protocol is enabled. For EIGRPv4, the router eigrp [ASN] global configuration command is required to enable EIGRPv4 routing and to specify the EIGRPv4 autonomous system number (ASN). When configuring EIGRPv6, the ipv6 router eigrp [ASN] global configuration command is used instead to enable EIGRPv6 and to specify the local router ASN.
While enabling EIGRPv4 and EIGRPv6 is somewhat similar, there is a very notable and significant difference in the protocol states once the . . .
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