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Troubleshooting Any Transport over MPLS Based VPNs

Chapter Description

MPLS Layer 3 VPNs allow a service provider to provision IP connectivity for multiple customers over a shared IP backbone, while maintaining complete logical separation of customer traffic and routing information. Learn more about MPLS Layer 3 VPNs in this sample chapter from Cisco.

Review Questions

  1. What transport mechanism is used for neighbor discovery between directly connected LDP peers?

  2. What is the LIB?

  3. What is the LFIB?

  4. What is a VRF?

  5. How are overlapping customer address spaces disambiguated in the MPLS VPN backbone?

  6. Which BGP extended community is used to control which VPN routes are imported into VRFs?

  7. Which routing protocols can be used between Cisco CE and PE routers?

  8. What label distribution protocol is used to advertise VPN labels?

  9. What label distribution protocol is used with MPLS traffic engineering on Cisco routers?

  10. What are the default and data MDTs?

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