A loopback interface is configured on all the nodes, for a better OSPF stability. MPLS is activated on all the neiboring interfaces of the PEs and P routers. An iBGP session is setup between the two PEs. The circuit is then re-activated and the convergence time of the network is measured. After the reading the summary of the first experiment , it's seems that the lack of recovery was due to the establishment of new TVCs.
Reverse operations are similar.
The network testbed is similar to what has previously been described for the re-routing test. The redistribution process between OSPF and BGP is stopped. VPN configuration is added to both PEs. Configuration files of the P routers are not modified. See PE-C config file with no routing enable between green and red.