Chapter 5. PE-CE Routing Protocol—OSPF and EIGRP

Chapter 4, "PE-CE Routing Protocol—Static and RIP," provided you with an overview and steps to configure static and RIP PE-CE routing protocol in an MPLS VPN environment.

This chapter introduces you to OSPF and EIGRP PE-CE routing protocol concepts and includes the following:

• OSPF PE-CE routing protocol overview, configuration and verification

  - Traditional OSPF routing model

  - MPLS VPN or OSPF superbackbone concept

  - OSPF route-propagation using the MPLS VPN superbackbone

  - OSPF down bit and domain tag

  - Configuring and verification of OSPF PE-CE routing

  - OSPF sham-links

• EIGRP PE-CE routing protocol overview, configuration, and verification

  - EIGRP route propagation

  - Configuration flowchart for EIGRP PE-CE routing

  - Routing loops and suboptimal routing

  - BGP cost community feature

  - EIGRP site of origin (SoO) attribute