MPLS/vpn experiment, OSPF/r12002

In the MPLS/vpn experiment, the configuration of OSPF/r12002 was developed from the basis of the first experiment, so some basic configurations are not mentioned here. The network topology is as follows: first complete the RIP configuration on CE1: Before you configure this, you must delete the previous configuration. If you do not delete the configuration, the problem may occur. CE1: router rip version 2 network 1.0.0.0 network 192.168.1.0 no auto-summary! The configuration above is complete. PE1: router rip version 2 network 192.168.1.0 no auto-summary! Address-family ipv4 vrf vpn redistribute bgp 100 metric 10 network 192.168.1.0 no auto-summary exit-address-family! Router bgp 100 no bgp default ipv4-unicast bgp log-neighbor-changes neighbor 4.4.4.4 remote-as 100 neighbor 4.4.4.4 update-source Loopback0! Address-family ipv4 neighbor 4.4.4 activate no auto-summary no synchronization exit-address-family! Address-family vpnv4 neighbor 4.4.4.4 activate neighbor 4.4.4 send-community extended exit-address-family! Address-family ipv4 vrf vpn redistribute rip metric 10 no synchronization network 192.168.1.0 mask 255.255.252 exit-address-family! In fact, configuration changes are just two or three commands. however, when I did this experiment, I made a mistake: I deleted the original command, but I forgot to call it again. Although I can learn the route information of the other party, I cannot communicate with each other, check the neighbors .. I suddenly remembered whether the LDP neighbor was set up and checked. No. The MPLS IP domain was not configured. Therefore, we had to test and learn that communication may not necessarily occur during the experiment.