Categories
Deploy360 IPv6

Interesting IPv6 Address Planning Discussion on NANOG Mailing List

IPv6 BadgeEarlier this month there was an interesting discussion on the public NANOG mailing list about IPv6 subnetting that I thought might be of interest to our readers.

The very lengthy discussion thread began back on October 9, 2014, when Erik Sundberg asked this question:

I am planning out our IPv6 deployment right now and I am trying to figure out our default allocation for customer LAN blocks. So what is everyone giving for a default LAN allocation for IPv6 Customers. I guess the idea of handing a customer /56 (256 /64s) or a /48 (65,536 /64s) just makes me cringe at the waste. Especially when you know 90% of customers will never have more than 2 or 3 subnets. As I see it the customer can always ask for more IPv6 Space.

/64
/60
/56
/48

Small Customer?
Medium Customer?
Large Customer?

The ensuing discussion makes for interesting reading to see what many network operators do and why they suggest doing things in the way that they do.

For our part, we have a page about IPv6 Address Planning that links to several resources that can help guide people in what to do:

http://dev.internetsociety.org/deploy360/resources/ipv6-address-planning/

Of particular interest (and was mentioned in the discussion thread) may be the Best Current Operational Practice (BCOP) document developed by NANOG on this particular topic and available at:

http://bcop.nanog.org/index.php/IPv6_Subnetting

It was a great to read the discussion on the NANOG list. One of the hardest things to understand when thinking about IPv6 address planning is the need to adjust your mind from living with the scarcity of IPv4 addresses to where we have a world of abundance of IPv6 addresses.  With that abundance we now have the freedom and flexibility to think about network addressing in a much different manner!

If you would like to get started with IPv6, please do visit our Start Here page to find resources tailored for your type of organization or role!

Categories
IPv6

Interesting IPv6 Address Planning Discussion on NANOG Mailing List

IPv6 BadgeEarlier this month there was an interesting discussion on the public NANOG mailing list about IPv6 subnetting that I thought might be of interest to our readers.

The very lengthy discussion thread began back on October 9, 2014, when Erik Sundberg asked this question:

I am planning out our IPv6 deployment right now and I am trying to figure out our default allocation for customer LAN blocks. So what is everyone giving for a default LAN allocation for IPv6 Customers. I guess the idea of handing a customer /56 (256 /64s) or a /48 (65,536 /64s) just makes me cringe at the waste. Especially when you know 90% of customers will never have more than 2 or 3 subnets. As I see it the customer can always ask for more IPv6 Space.

/64
/60
/56
/48

Small Customer?
Medium Customer?
Large Customer?

The ensuing discussion makes for interesting reading to see what many network operators do and why they suggest doing things in the way that they do.

For our part, we have a page about IPv6 Address Planning that links to several resources that can help guide people in what to do:

http://dev.internetsociety.org/deploy360/resources/ipv6-address-planning/

Of particular interest (and was mentioned in the discussion thread) may be the Best Current Operational Practice (BCOP) document developed by NANOG on this particular topic and available at:

http://bcop.nanog.org/index.php/IPv6_Subnetting

It was a great to read the discussion on the NANOG list. One of the hardest things to understand when thinking about IPv6 address planning is the need to adjust your mind from living with the scarcity of IPv4 addresses to where we have a world of abundance of IPv6 addresses.  With that abundance we now have the freedom and flexibility to think about network addressing in a much different manner!

If you would like to get started with IPv6, please do visit our Start Here page to find resources tailored for your type of organization or role!

Categories
Deploy360 IPv6 Tutorials

2 Excellent New Tutorials On IPv6 Address Planning From ISOC and SURFnet

Example Router TopologyHow should you plan out your IPv6 addresses? What is the best way to allocate IPv6 address blocks to your various networks and subnets? What factors should you be considering when mapping out a plan for how best to use your IPv6 addresses?  These are all great questions and were in fact topics I covered in two recent IPv6 webinars – but we’re very pleased to announce two recent documents that go into this topic in great detail (and we’ve added both to our new IPv6 Address Planning page):

IPv6 Address Planning: Guidelines for IPv6 address allocation

The first IPv6 address planning document is one written for our Deploy360 site by Tim Rooney at BT Diamond IP after he was reviewing our IPv6 content roadmap and contacted us about writing this document for our web portal.  It’s a brand new document that we’re publishing for the first time today.  Tim does an excellent job walking through the issues around why you need an IPv6 address plan, how you should set one up, suggestions for how to number subnets and then several examples of exactly how you could allocate addresses to subnets based on a plan.  He concludes with some recommendations and observations.

It’s a solid document that I think will be quite useful for anyone starting out with IPv6.  We greatly appreciate Tim’s contribution to our site and thank him for the time he spent on the document.  (And we’re always open to new contributors!)

SURFnet: Preparing An IPv6 Address Plan

In a bit of synchronicity, the great team over at SURFnet came out with a new version of their IPv6 address planning document last week.   They first came out with this document in 2011 and with the help of RIPE NCC made it available in both Dutch and English.  In this new and improved version they’ve changed the flow of the text a bit and added in more information.  The document starts out with a brief review of IPv6 addressing and then gets into the details of creating an address plan. It provides some excellent suggestions and recommendations and includes some detailed examples of how you could structure an address plan.  The document also contains sections around how you manage the assignment of IPv6 addresses out to end devices (hosts).

This document, too, is an outstanding document for anyone getting started with IPv6.  Thanks to the SURFnet team for coming out with this new version!

While the two documents cover similar ground, they both offer provide different and useful perspectives on how to create an IPv6 address plan.  The combination of the two documents will be quite helpful for anyone looking to get started with IPv6.

We strongly encourage you to read both documents (and please do share them with others!) and provide any comments and feedback back to the authors.  We’ve added them to a new IPv6 Address Planning page where we will also be adding other resources on this topic (and please let us know if you are aware of some resources we should consider adding). Now… let’s get those IPv6 networks deployed!