Posts Tagged ‘dhcpv6’


This post helps to celebrate the upcoming 3-Day IPv6 Bootcamp here at INE.

We always hear much excitement regarding the stateless address autoconfiguration capability in IPv6, but we never seem to get to see it in action. And also, we realize that one router can provide another with the address information it needs, but what about things like DNS server information? In this demonstration I will show how the stateless autoconfiguration can be setup, as well as a nifty stateless DHCPv6 implementation that can assist with the other configuration information.

For this demonstration, I just fired up two routers in Dynamips (R1 and R2) and connected them via their respective Fa0/0 interfaces. R1 will be our “server” and R2 will be our dependent little “client”. Let us start at the server and ensure it is configured for the IPv6 stateless address autoconfiguration part.

R1# conf t
R1(config)# ipv6 unicast-routing
R1(config)# int fa0/0
R1(config-if)# no shut
R1(config-if)# ipv6 address 2001:1212::/64 eui-64
R1(config-if)# ipv6 nd prefix 2001:1212::/64
R1(config-if)# no ipv6 nd suppress-ra

Simple stuff – notice that we are leveraging the Neighbor Discovery process of IPv6 in order to provide the prefix for autoconfiguration to the link. Notice also how we have to unsuppress the sending of Router Advertisements on the link.

Now we head over to the client device:

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