Re: IPv6 migration steps for mid-scale isp

[Youssef Bengelloun-Zahr <bengelly () gmail com>]

Hi,

My advice is not to mix IGPs. If you are already running ISIS, then go for multi-topology and dual-stack it.

I've done that several times, running different backbones, works like a charm. Less overhead as you'd only be running 
one IGP.

My 2 cents.



> Le 16 sept. 2017 à 10:09, Fredrik Sallinen <fredrik.sallinen () gmail com> a écrit :
>
> Thank you all for your Ideas. AFAIK one of the main decisions for IPv6
> transition and deployment is the choice of IPv6 IGP. I read somewhere
> that its a good practice to use different IGP protocol for IPv6 and
> IPv4. For example if IGP for IPv4 is IS-IS then use OSPFv3 for IPv6.
> any comments on this?
> Additionally I will appreciate it if you share your suggestions on
> products and their performance? For example If I go for NAT64+DNS64 to
> handle IPv4 traffic, What sort of carrier grade products are you
> recommending and can you share your experience on their
> performance/pitfalls? currently we have ~150Gbps of IPv4 traffic, so
> we need a solution to
> support such scale and future growth.
>
>
> Regards,
>
> > On Thu, Sep 14, 2017 at 9:35 PM, Mikael Abrahamsson <swmike () swm pp se> wrote:
> > > On Wed, 13 Sep 2017, Fredrik Sallinen wrote:
> > >
> > > Hello,
> > >
> > > Recently we have decided to start IPv6 migration in our network. We
> > > have ~1K BNGs and connecting our customers to network using PPPoE.
> > > I'd be interested in hearing from the technical community about their
> > > experiences and recommendations on this process. I'm wondering:
> > >
> > > Shall I go for IPv6-only deployment or dual stack?
> >
> >
> > For PPPoE with existing IPv4, go dual stack.
> >
> > > Where to start with IPv6? (core, edge or ...)
> >
> >
> > Core, peering, work outwards towards end users.
> >
> > > What are the best practices for ISPs?
> > > What are the costs and return on investment?
> > > How to identify address CPE and legacy application issues?
> >
> >
> > There is a lot written and presented about IPv6 deployment. People have been
> > doing this in volume since around 2010, and if you search for IPv6
> > deployment experience you'll find lots of presentations.
> >
> > Some I found that seem relevant:
> >
> > https://www.nanog.org/meetings/nanog51/presentations/Monday/aronson-pierantozzi-level3-ipv6.pdf
> > https://www.ietf.org/proceedings/54/slides/plenary-15.pdf
> > https://www.apnic.net/community/ipv6-program/ipv6-stories/
> > https://www.ipv6council.be/experiences-de-deploiements-ipv6/
> >
> > If you prefer video form, there are lots of presentations from conferences,
> > available on youtube as well.
> >
> > --
> > Mikael Abrahamsson    email: swmike () swm pp se