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300-510 · Question #270

What is a restriction of 6PE?

The correct answer is A. It cannot be implemented on VRFs.. 6PE (IPv6 Provider Edge) is a method to enable IPv6 traffic over an MPLS IPv4-only core without the need to upgrade the core to support IPv6. In 6PE, the IPv6 prefixes are transported using BGP over an MPLS backbone. The IPv6 traffic is encapsulated with an IPv4 MPLS label and fo

Service Provider VPN Services

Question

What is a restriction of 6PE?

Options

  • AIt cannot be implemented on VRFs.
  • BIt is implemented only over iBGP peers.
  • CIt adds a value of ::FFFE: on the IPv4 next hop address.
  • DIt is implemented only over eBGP peers.

How the community answered

(31 responses)
  • A
    94% (29)
  • B
    3% (1)
  • C
    3% (1)

Explanation

6PE (IPv6 Provider Edge) is a method to enable IPv6 traffic over an MPLS IPv4-only core without the need to upgrade the core to support IPv6. In 6PE, the IPv6 prefixes are transported using BGP over an MPLS backbone. The IPv6 traffic is encapsulated with an IPv4 MPLS label and forwarded across the network. 6PE cannot be implemented on VRFs because it operates within the global routing table and does not utilize VRF-based services like those in 6VPE (IPv6 VPN Provider Edge). 6VPE, on the other hand, supports VRFs and enables IPv6 VPN services over an MPLS IPv4 core.

Topics

#6PE#IPv6 over MPLS#VRF limitation#MP-BGP

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