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IPv6 Training (Cisco): How is EIGRPv6 different from EIGRPv4? 

Added: 08/21/2008, Hits: 4,989, Rating: 0, Comments: 0, Votes: 0
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Well, if you are new to the IT networking field, you probably feel it’s quite fascinating or it’s very overwhelming, trying to understand all of the different Interior Gateway Protocols (IGP’s) that can be used to route packet information within a network.

If you are feeling overwhelmed by it all don’t worry, you’re not alone; I felt the same way. That’s why I wrote this article to help you quickly understand the major differences between EIGRPv6 and EIGRPv4.

In a nutshell, the overall operation and features of EIGRPv6 are still the same as they are in EIGRPv4. But, EIGRPv6 does differ from EIGRPv4 in the following ways:

  • EIGRPv6 is configured (enabled) directly on Cisco router’s interfaces; this means EIGRPv6 can be configured (enabled) on a router’s interface, without having to configure (assign) a Global IPv6 address on the interface and without using the “network” command while the router is in router configuration mode.

  • Also, when configuring (enabling) EIGRPv6 on a Cisco router, the EIGRP routing process must be configured (assigned) with a “router-id” (by using the router configuration command “router-id”); if a “router-id” is not configured (assigned) the EIGRPv6 routing process will not start.

  • The EIGRPv6 routing process also uses a “shutdown” feature; meaning an EIGRPv6 routing process will not start until the routing process has been placed into “no shutdown” mode. (by, typing the “no shutdown” command while the router is in router configuration mode)
  • Also, on Passive Interfaces; EIGRPv6 is not required to be configured.

  • Lastly, EIGRPv6 use the router configuration command “distribute-list prefix-list” to perform route filtering; and when configuring route filtering the “route-map” command is not supported.

I invite you to visit my website at where you’ll find the latest information regarding Cisco IPv6 Design and Implementation Techniques. And, also learn more about the new "Cisco IPv6 Video Accelerated Training Course" which contains over 3000 videos that will teach you all you need to know about Designing, Building, and Deploying Cisco IPv6 networks. (Guaranteed)

To your success,

Charles Ross
CCNP #CSCO10444244

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