Re: Looking for information on IGP choices in dual-stack networks

[Matthew Petach <mpetach () netflight com>]

We use IS-IS dual-stack in the core,
and OSPFv2+OSPFv3 in the datacenters.
Roughly 100 routers in the IS-IS core, and
less than 2000 routers in the OSPFv2+OSPFv3
datacenters.

Matt


On Tue, Jun 9, 2015 at 5:59 PM, Victor Kuarsingh <victor () jvknet com> wrote:
> I/we (Philip and I) attempted to keep the question as generic as possible,
> allowing folks to state the IGPs they use, in whichever combination or in
> some cases (as we can see), more complex deployments.
>
> I would agree with statements form Joel earlier with respect to cases where
> early vendor support may have influenced some network zones (inside a given
> AS) to support a different IGP (his case of OSPFv3 for devices which lacked
> IS-IS support is one I did face a few years back as well in the DC with
> respect to Load balancing  and Firewall devices).
>
> The merger one was a new one for me, but it seems to reflect some peoples
> reality.
>
>
> regards,
>
> Victor K
>
>
>
>
> On 2015-06-09 7:41 PM, Joe Abley wrote:
> > Hi Randy,
> >
> > On Jun 9, 2015, at 18:08, Randy Bush <randy () psg com> wrote:
> >
> > > > Routers makes more sense to me than networks (IGP, so one network,
> > > > right?)
> > >
> > > so you are thinking of a network where half the routers run is-is one
> > > quarter ospf/ospfv2 and one quarter ospf/ripv3.  right.
> >
> > No, not at all. I thought Victor was asking "what IGP" and "how many
> > routers use it in your network". I assumed he was interested in
> > whether the size of the network influenced the IGP choice.
> >
> > Perhaps I misunderstood, because apparently I was the only one who
> > read it that way.
> >
> >
> > Joe