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HSRP configuration is short - a working setup is two lines per router - but the short config hides the decisions that

There is no single "IPv6 migration button." Instead there are three transition mechanisms, and the skill is knowing

Dual-stack and tunnels both assume IPv6 exists on both ends of a conversation. NAT64 solves the harder case: an

Sometimes you have IPv6 islands that need to talk to each other, but the network in between is IPv4-only

IS-IS is the quietest way to break IPv6 in your network. It will happily form an adjacency, show every

EIGRP did not just bolt IPv6 support onto the existing process. On Cisco IOS XE, EIGRP for IPv6 is a