Looking for information on IGP choices in dual-stack networks

Tue Jun 9 21:00:49 UTC 2015

On Tue, Jun 9, 2015 at 4:36 PM, Joe Abley <jabley at hopcount.ca> wrote:
>
>
> On 9 Jun 2015, at 16:23, Christopher Morrow wrote:
>
>> On Tue, Jun 9, 2015 at 3:21 PM, Randy Bush <randy at psg.com> wrote:
>>>> If you have a production dual-stack network, then we would like to know
>>>> which IGP you use to route IPv4 and which you use to route IPv6.
>>>
>>> in one network, both ospfs.  in another is-is.  i recommend the latter.
>>>
>>>> We would also like to know roughly how many routers are running this
>>>> combination.
>>
>> why is the question /routers/ and not /networks/ ?
>
> Routers makes more sense to me than networks (IGP, so one network, right?)

that confuses me, the logic I mean...

I suppose in a single network I'd expect to see one igp for an address
family (ospf or ospfv3). Not "eastcoast devices do ospf (stodgy
bastards!) and westcoast goes isis!"