Re: [v6ops] draft-vf-v6ops-ipv6-deployment

[Gyan Mishra <[e-mail]>]

On Tue, Mar 30, 2021 at 2:34 PM Yannis Nikolopoulos <[e-mail]>
wrote:

>
>
> On 3/28/21 9:47 PM, Brian E Carpenter wrote:
> > Dual stack has no time limit
> (for us ISPs) it has, it painfully has, if your user base is still growing


Gyan> I think to your POV there is a flip side as dual stack is simple and
easy cannot get any simpler than that, however the downside is the process
of deployment can be painfully slow but it all depends. If you are
provisioning 1000s of sites for dual stack that still can be done with ZTP
even with complex DMVPN or other overlay topologies dual stacked still not
difficult.  I think whenever manual configuration comes into play and you
have even a 100 sites or devices that can be painful and lengthy process.

There are definite tradeoffs.

Dual stack is less complexity but then you have IPv4  provisioning and
numbering plan so you could say that in itself is complex.

If it’s fixed broadband BNG or 4G/5G mobile the drawback as well with dual
stack is IPv4 addressing numbering plan but having to maintain
configuration for both IPv4 and IPv6 could be considered complex, even
though the dual stack process is as simple as it gets.

With IPv4 AAS the attraction could be the minimum configuration footprint
number of lines of config.

Learning curve yes for operators but you could say that for any technology
their is a learning curve.

I think the bigger deal for operators is how long the timeframe to maintain
IPv4AAS is a bigger factor as that could be decades and it could be almost
like a permanent solution.



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*Gyan Mishra*

*Network Solutions A**rchitect *

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