MPLS OSPF need for an IGP over the SP

In your MpLS lesson…i see you have used for OSPF and BGP…I can see you have used OSPF between your PE routers…i wonder why that is…does you IGP need to be advertised through the ISP network?

Hello Kawshik

Can you be more specific about the lesson? Let us know and we’ll do our best to answer your question.