H12-891 Web TestEngine demo

The TTL field in the label has the effect of preventing loops.

IBGP PEs generally use the Loopback interface address to establish a stable BGP neighbor relationship.

BGP So0, which is used to prevent routes issued from a VPN site from passing through the MPLS backbone and back to that site. So0 is an extended group attribute that MP-BGP automatically generates.

The routing exchange between PE-CE can be static routing, OSPF multi-instance, IS-IS multi-instance, or EBGP.