[c-nsp] OSPF domain-tag

[Jeferson Guardia]

 Guys,

I am studying MPLS vpn stuff and it came across some new stuff of mpls, but
this one is not quite clear for me yet, the domain-tag. I had an
idea that somehow is used to prevent redistributed routes that originated
from the MPLS backbone from returning via some other location on the MPLS
backbone.

Am I right? anything else to add or any other concept I should be aware of?

Best regards,