Home > Articles > Cisco Network Technology > IP Communications/VoIP > Mastering IPv6 SLAAC Concepts and Configuration

Mastering IPv6 SLAAC Concepts and Configuration

Contents

  1. SLAAC Defined
  2. SLAAC Configuration
  3. Summary

Article Description

Some differences between IPv4 and IPv6 are more obvious than others. Sean Wilkins explains the new available methods for performing address configuration, how to implement DHCPv6 in IPv6, and the best options for stateless configuration. He also walks you through a detailed sample SLAAC configuration on a Cisco device to be sure you can apply what you’ve learned to your situation.
SLAAC Configuration

SLAAC Configuration

The basic configuration of SLAAC on a Cisco device is quite simple. The required steps are shown in Table 1.

Table 1: Basic IPv6 SLAAC Configuration

1

Enter privileged EXEC mode

Router>enable

2

Enter global configuration mode

Router#configure terminal

4

Enable IPv6 routing

Router(config)#ipv6 unicast-routing

4

Enter interface configuration mode

Router(config)#interface interface

5

Configure an IPv6 address

Router(config-if)#ipv6 address ipv6-address/prefix-length

6

Enable the interface

Router(config-if)#no shutdown

To bring this together with the example topology shown in Figure 1, the required commands to configure R1 are shown in Table 2.

Table 2: Basic IPv6 SLAAC Example Configuration

1

Enter privileged EXEC mode

R1>enable

2

Enter global configuration mode

R1#configure terminal

4

Enable IPv6 routing

R1(config)#ipv6 unicast-routing

4

Enter interface configuration mode

R1(config)#interface fa0/0

5

Configure an IPv6 address

R1(config-if)#ipv6 address 2000:1234:5678::1001:1/64

6

Enable the interface

R1(config-if)#no shutdown