CGNAT

Tue Feb 23 14:36:48 UTC 2021

Hi Steve

We are looking at implementing a similar solution with A10 for CGNAT.

We've been in touch with A10. Just wondering if there are some alternative vendors that anyone would recommend. We'd probably be looking at a solution to support 5k to 15k customers and bandwidth up to around 30-40 gig as a starting point. A solution that is as transparent to user experience as possible is a priority.

The numbers below are for a similar target of subscriber’s and peak bandwidth.

We assumed a couple of numbers:
Current Peak Bandwidth = 40G
Remaining IPv4 traffic after migration = 20% (Seen references to 10% or 20% on this forum)
Future Bandwidth Growth = 2x (no data behind this assumption)
Future CGNAT’ed bandwidth = 15Gbps
Equipment & budget lifecycle = 7Yr

Getting that data led us to this price comparison:

Solution
Lifecycle/ Term
Annual Cost/Sub
Product Lifecycle Cost/Sub
Lease IPv4 Cogent
7
$     4.45
 $   31.13
A10 CGNAT 15Gb 7Yr
7
$     1.21
 $     8.47
A10 CGNAT 40Gb 7Yr
7
$     1.95
 $   13.68
Purchase @ $25 7Yr
7
$     3.57
 $   25.00

The current plan is implement an A10 CGNAT solution after upgrading our network for IPv6.  In the interim we will have to lease IPv4 to tide us over.

I would be curious to see what other’s estimate the costs of various approaches.  Feel free to ping me off-list for more specific numbers.

Kevin Burke
802-540-0979
Burlington Telecom
200 Church St, Burlington, VT

From: NANOG <nanog-bounces+kburke=burlingtontelecom.com at nanog.org> on behalf of Steve Saner <ssaner at ideatek.com>
Date: Friday, February 19, 2021 at 9:56 AM
To: "nanog at nanog.org" <nanog at nanog.org>
Subject: CGNAT

We are starting to look at CGNAT solutions. The primary motivation at the moment is to extend current IPv4 resources, but IPv6 migration is also a factor.

We've been in touch with A10. Just wondering if there are some alternative vendors that anyone would recommend. We'd probably be looking at a solution to support 5k to 15k customers and bandwidth up to around 30-40 gig as a starting point. A solution that is as transparent to user experience as possible is a priority.

Thanks

--
Steve Saner
ideatek HUMAN AT OUR VERY FIBER

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