PE Router 2 (PE2)
   
      PE2 connects to both customer A and customer B.
      In executive command mode, configure SPBV on the router:
      
         - Set Spanning Tree version to SPT
 
         - Configure the Spanning Tree MST configuration name to spbvRegion1
 
         - Configure the SPVID pool for 2000 - 2200 and set the pool to SID spvid (4095)
 
         - Map customer VLANs 100 and 200 to SID spbv (4093)
 
         - For the ECT algorithm, the default value of 1 is used.
 
         - All Global router ports, ge.1.10-20 are enabled for SPBV
 
      
      On customer B VRF3 configure:
      
         - RD – 2:21
 
         - Route target – export 2:20 and import 2:2 and 2:20
 
      
      On customer A VRF4 configure:
      
         - RD – 1:11
 
         - Route target – export 1:10 and import 1:1 and 1:10
 
      
      In the global VRF (using L3 Tunneling):
      
         - Configure a loopback interface for each L3 tunnel to be used as the tunnel source interface, specifying the global VRF BGP address as secondary
 
         - Configure L3 tunnels 1 (tun.0.1) connecting PE2 and PE1 and L3 tunnel 2 (tun.0.2) connecting PE2 and PE3
 
         - Configure a static route to the loopback interface BGP address to force BGP traffic to use the tunnel instead of the associated VLAN
 
         - Enable the VPNV4 address family in BGP configuration mode (if using IPv6 enable VPNV6)
 
         - Activate VPNV4 neighbors
 
         - Activate VPNV4 neighbors
 
         - Redistribute OSPF in the BGP configuration mode IPv4 address family for both VRF3 and VRF4
 
      
      In the global VRF (using Native MPLS):
      
         - Enable Native MPLS for the appropriate IP address type
 
         - Enable MPLS LDP for the appropriate IP address type
 
         - Configure a loopback interface specifying the global VRF BGP address as primary
 
         - Enable the VPNV4 address family in BGP configuration mode (if using IPv6 enable VPNV6)
 
         - Activate VPNV4 neighbors
 
         - Redistribute OSPF in the BGP configuration mode IPv4 address family for both VRF1 and VRF2