There are ISP using NX-OS...just in the DC where it belongs (since the Nexus platform is designed for the data center). I don't think it has anything to do with IS-IS support though (although it may help sway some people now).
> On Oct 25, 2015, at 8:50 AM, "[email protected]" > <[email protected]> wrote: > > related to the discussion about IGP choice, I had a quick look and found that > NX-OS ISIS for IPv6 support is quiet recent. Was not supported on 5.x, but it > supported on 7.x (2015). > > This might explain why not so many ISP use NX-OS. > >> On 21.10.2015 08:25, [email protected] wrote: >> Dear Nanog'er, >> >> Anybody using NX-OS on MPLS LSR and/or Edge-LSR ? >> >> We are evaluating the replacement of 7600 LSR routers. Our natural >> carrier/ISP choice would go for XR everywhere, but we are also curious >> about NX-OS on the core. >> >> Why not NX-OS for LSR and XR for Edge-LSR ? >> >> >> Thank, >> -Marcel
