MPLS and VPN Architectures, CCIP™ Edition

Chapter 11.  Provider Edge (PE) to Customer Edge (CE) Connectivity Options

This chapter includes the following topics:

• VPN Customer Access into the MPLS/VPN Backbone

• BGP-4 Between Service Provider and Customer Networks

• Open Shortest Path First (OSPF) Between PE and CE Routers

• Separation of VPN Customer Routing Information

• Propagation of OSPF Routes Across the MPLS/VPN Backbone

• PE-to-CE Connectivity—OSPF with Site Area O Support

• PE-to-CE connectivity—OSPF Without Site Area O Support

• VPN Customer Connectivity—MPLS/VPN Design Choices

VPN Customer Access into the MPLS/VPN Backbone

We have seen in previous chapters how VPN customer routes are propagated around an MPLS/VPN backbone network through the use of MP-BGP. These routes are taken from VPN routing and ...