When connecting a CE router to a PE LSR via OSPF, setting the VRF loopback for a router-id requires the ‘ip vrf forwarding [name]‘ command causing the loopback to belong to a VRF instead of the default routing table. When the PE devices also needs a loopback for other reasons such as MP-BGP and MPLS, is it considered good design to just create 2 loopbacks? One per VRF for OSPF processes and the other for the default IP routing table protocols? Just curious since I have always used a single loopback address for my labs per device.
The question is really just preference or experience. I understand it’s possible to have many, many loopbacks and therefore it would work. Just curious since the book “MPLS Fundamentals” trucates the full set of commands and I cannot deteremine if another loopback is servicing other protocols.
Thanks,
Mike