You might think that EIGRP being around for so long is not getting any attention from
Cisco, not true. EIGRP is still being developed and in later releases you can run what
is called named configuration. Doing this you can put all EIGRP config under one named
instance, even v6 which is different from the old syntax. If you are on Twitter you should
follow Donnie Savage @diivious. He works for Cisco and is usually present at Cisco Live
presenting on the development of EIGRP.

We start out with the following topology.


So we start out by defining our instance and calling it corp

From there we have the following options:

From here we can shutdown the process or configure different address families.
We start by setting up IPv4 in the global table.

From here we define networks, setup static neighbors and configure EIGRP parameters.

We will use regular syntax on R2 for setting up EIGRP.

The session comes up.

R2 is announcing it’s loopback. Lets see if we receive that.

What more can we configure under the address-family?

We configure all EIGRP interface commands under the af-interface. We can setup
authentication of the peering.

What’s new here is that sha-256 is now also supported. From this af-interface mode
we can configure timers and BFD as well.

Now we will configure IPv4 in a VRF called 13.

Do we receive any prefixes?

Which we do. Nothing strange here, just a new syntax for defining VRFs compared
to the old ip vrf syntax.

Finally we will configure IPv6 peering as well. Because EIGRP sends packets from
link local address we don’t even need to configure a global IPv6 address.

Only difference here is that instead of defining network we use the interface command
instead to enable it on all active IPv6 interfaces.

And that’s about it. Named configuration is made to unify configuration under
one instance and remove the commands that we used to type under the interface
like authentication and such. It’s now all done under the address-family.
In future posts I will look at Multi Topology Routing (MTR).

EIGRP named configuration
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