[no subject]

> On 10 Nov 2018, at 1:03 am, im <nanog at netfront.jp> wrote:
> 
> I heard that OSPF is only famous in asia regionâ?¦

Not necessarily :-)

>  1. what is your backbone's IGP protocol?

IS-IS

>  2. why you choose it?

OSPFv3 was quite flaky (could have been OS bugs), and there wasnâ??t v4 support until rfc5838, so migrated to IS-IS when deploying v6 (with Philip Smithâ??s help).

But preferred multi topology to allow for incremental v6 deployment (without affecting v4).

â??
Tashi