OSPF vs ISIS - Which do you prefer & why?

Mark Tinka mark.tinka at seacom.mu
Fri Nov 11 10:20:49 UTC 2016

On 11/Nov/16 12:07, Baldur Norddahl wrote:

> No filters. There are just no routes that will take a network packet that
> arrive on an interface in VRF internet and move it to an interface in VRF
> default without adding a MPLS header to mark the VRF. With the MPLS header
> the packet type is no longer IPv4 but MPLS.
> Therefore there is no way you from the internet or from a customer link can
> even attempt to inject packets that would be received by the OSPF process.
> Since we use and our vrf internet has no such route, you would
> just get no route to host if you tried.

Good for you.

We don't run the whole "Internet in a VRF" architecture (too many moving
parts), so not having our IGP being exposed to IP helps :-).


More information about the NANOG mailing list