300-515 · Question #158
Which routing requirement must be considered when OSPFv3 is implemented as the PE-CE routing protocol?
The correct answer is D. The routes received from OSPFv3 must be redistributes into BGP to allow connectivity between. When OSPFv3 is used as the PE-CE routing protocol in an MPLS VPN, the PE learns customer IPv6 routes via OSPFv3. For these routes to be advertised across the MPLS backbone to other sites, the PE must redistribute OSPFv3 routes into MP-BGP. This redistribution enables…
Question
Which routing requirement must be considered when OSPFv3 is implemented as the PE-CE routing protocol?
Options
- AThe routes received from BGP must be statically entered on the CEs with the next hop set as the
- BThe CE and PE routers must establish an OSPF peering and an OSPFv3 peering.
- CMPLS must be configured on the link between the PE and CE.
- DThe routes received from OSPFv3 must be redistributes into BGP to allow connectivity between
How the community answered
(38 responses)- A3% (1)
- C3% (1)
- D95% (36)
Explanation
When OSPFv3 is used as the PE-CE routing protocol in an MPLS VPN, the PE learns customer IPv6 routes via OSPFv3. For these routes to be advertised across the MPLS backbone to other sites, the PE must redistribute OSPFv3 routes into MP-BGP. This redistribution enables connectivity between customer sites through the provider’s MPLS VPN infrastructure.
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