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ipv6 design


IPv6 design is one of the hottest topic nowadays due to IPv4 address exhaustion. Most of the RIR (Regional Internet Registries) allocated their available IPv4 addresses already.

Migration to IPv6 only network and understanding IPv6 transition mechanisms such as Dual Stack IPv6 design, IPv6 tunnelling mechanisms and IPv6 translation mechanisms such as NATPT, NAT 64 + DNS64 , SLB 64 is very important.

All are the mechanisms have pros and cons and understanding those is a good consultant opportunity for the network designers.

If you are not good at IPv6, you should start today. You might think that there are more important topics such as SDN, Cloud, IOT but that is not true. IPv6 is a foundational mechanism for all of them and you can’t have successful SDN, Cloud or IOT design without solid IPv6 knowledge.

It is not too late, start test your IPv6 design knowledge with this test and be honest yourself ! Identify your weak areas in IPv6 and start study. This website and my design training course together cover all aspects of IPv6 design.

There are 30 IPv6 design questions and answers in this test.

There are IPv6 addressing design, IPV6 migration and transition mechanisms (Dual Stack, Tunnelling, Translation, IPv6 Only) design, IPv6 multicast,IPv6 security, IPv6 routing and IPv6 Business Cases questions in this test.

You should finish in 100 minutes.

For more design tests please subscribe to CCDE Course.

For the detailed discussions for IPv6 and all the other networking design topics please register for any upcoming CCDE Bootcamp. Check 2016 Training Schedule from here.

IPv6 Design


  1. I think this question is a bit confusing. I read ‘planning IPv6 access for their residential broadband customers’ as ‘customers need to have IPv6 access (== ‘have Ipv6 addresses’).
    Which means that CGN is not a solution as CGN covers IPv4 access only.

    In addition to that it is not clear what ‘access node changes’ means – if it means ‘CPE should not be touched – then why 6rd is there? 6rd would still require IPv6 to be enabled on CPE

    • Hi Jen, Thanks for the comment. For the first one, IPv6 access can be changed as IPv6 reachability. That would be less confusing agree.

      But for the second one, It is pretty clear actually.In Service Provider design, even when I work with the operation folks, the terminology is always same.

      Access network is DSLAM, BRAS,CMTS and so on.

      CPE varies based on these access network equipment as you know thus, access node changes mean, access network nodes which are in the SP domain.

      CPE is at the customer domain. Thus 6rd must be there since it is the common deployment technology, at least 3 SP which I worked they use it.

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