ipv6 address management - documentation

Fri Nov 17 05:57:01 UTC 2023

Christopher,

A residential customer would be getting their /56 from the providers pool via RA or DHCPv6. With a /32 aggregate, it can handle 1.6 million /56 delegations, which can cover a few regions. It all depends on the planning going into splitting up the aggregate.

A rule of thumb I go by in the datacenter is, a /48 per customer per site, and further splitting it into /64s per VLAN, all of which can be plugged into a spreadsheet formula to produce a valid complete subnet.

Either way, keeping track of IPAM via spreadsheet is a recipe for disaster. NetBox and Nautobot are my choices, and is worth deploying on a server or VPS, even for home labs.

Ryan

________________________________
From: NANOG <nanog-bounces+ryan=rkhtech.org at nanog.org> on behalf of Christopher Hawker <chris at thesysadmin.au>
Sent: Thursday, November 16, 2023 3:52:59 PM
To: Aaron Gould <aaron1 at gvtc.com>; Owen DeLong <owen at delong.com>
Cc: nanog at nanog.org <nanog at nanog.org>
Subject: Re: ipv6 address management - documentation

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One of the first things that comes to mind, is that if you were to breakout a /64 v6 subnet (a standard-issue subnet to a residential customer) in an Excel spreadsheet, the number of columns you would need is 14 digits long. You could breakout the equivalent of a /12 v4 in just one column. Understandably in the real world no one (in their right mind) would do this, this is just for comparison.

Regards,
Christopher H.
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From: NANOG <nanog-bounces+chris=thesysadmin.au at nanog.org> on behalf of Owen DeLong via NANOG <nanog at nanog.org>
Sent: Friday, November 17, 2023 10:39 AM
To: Aaron Gould <aaron1 at gvtc.com>
Cc: nanog at nanog.org <nanog at nanog.org>
Subject: Re: ipv6 address management - documentation

Spreadsheets are terrible for IPAM regardless of address length, but I am curious to know why you think IPv6 would be particularly worse than IPv4 in such a scenario?

Owen

> On Nov 16, 2023, at 10:02, Aaron Gould <aaron1 at gvtc.com> wrote:
>
> For years I've used an MS Excel spreadsheet to manage my IPv4 addresses.  IPv6 is going to be maddening to manage in a spreadsheet.  What does everyone use for their IPv6 address prefix management and documentation?  Are there open source tools/apps for this?
>
> --
> -Aaron

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