It is used with Stateless Address Autoconfiguration, also known as SLAAC (see the following chapters) and Link-Local addresses (see the previous chapter) ICMPv6 Duplicate Address Detection (DAD) is used to make sure a (generated) address is unique . How Pv6 Duplicate Address Detection works as long as Duplicate Address Detection (DAD) is not successful and still running, the new address is marked as tentative and is not yet used.if no ICMPv6 Neighbor Advertisement message (NA) is received, nobody else is apparently using the same address.The host performs Duplicate Address Detection (DAD) by sending an ICMPv6 Neighbor Solicitation message (NS) to the solicited-node multicast address belonging to the just generated Link-Local address.The host generates an address out of fe80::/10 using EUI-64 (see next chapter).Link-Local addresses are needed for crucial network components such as Neighbor Discovery Protocol (NDP) and DHCPv6. A Link-Local address has to be active for every interface on which IPv6 is enabled. Please note: yes, this /10 block is large but the prefix for the generated Link-Local address is still always /64!Ģ. the block from which the address is assigned is always fe80::/10. As you can see, there is not much difference for the major networking vendors in regards to configuration syntax.ġ. I put together a static configuration comparison in the following table. I learn best by a lot of practice and playing around, maybe this works for you, too! Types of IPv6 address assignment You can also emulate some routing gear on Cisco’s Virtual Internet Routing Lab (VIRL) and different operating systems using commercial and free virtualization software, such as VirtualBox. There are some nice lab simulators on the internet that can be used to configure virtual or physical routers without the need to purchase and run them in your home (which I did back when I learned about networking). Please feel free to do more research and testing using other platforms. In the examples I use some common platforms such as Cisco IOS, HP ProCurve, HP/H3C Comware, Juniper JUNOS, Apple MacOS, Microsoft Windows and Linux. Now that you know all important basics about IPv6, let’s have some fun and jump into configuration on some devices. IPv6 Foundation Part 5: IPv6 Configuration, EUI-64, SLAAC & Dual Stack IPv6 Configuration on your Devices Part 13 – IPv6 Internet Connection & Address Planning ![]() Part 10 – IPv6 DNS, Monitoring & Address Management Part 5 – IPv6 Configuration, EUI-64, SLAAC & Dual Stack ![]() Part 3 – IPv6 Headers & Header Extensions
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