350-501 · Question #502
Refer to the exhibit. PE1 and PE2 provide backbone carrier support to CSC-CE1 and CSC-CE2. CSC-CE1 and CSC-CE2 provide internet access and interoffice communication for CE1 and CE2, which are…
The correct answer is D. Implement Unified MPLS between the CSC and PE routers. In this scenario, the Customer Service Carrier (CSC) routers (CSC-CE1 and CSC-CE2) are now in different Autonomous Systems (AS) from PE1 and PE2. Unified MPLS is the most suitable approach to ensure seamless Layer 3 connectivity between CE1 and CE2 while maintaining scalability…
Question
Refer to the exhibit. PE1 and PE2 provide backbone carrier support to CSC-CE1 and CSC-CE2. CSC-CE1 and CSC-CE2 provide internet access and interoffice communication for CE1 and CE2, which are located at two different offices of an international corporation. CSC-CE1 and CSC-CE2 were recently moved to different autonomous systems from PE1 and PE2, and they must provide Layer 3 services to CE1 and CE2. Which task must the engineering team perform to allow CE1 and CE2 to continue to communicate through the two service providers?
Exhibit
Options
- AImplement multicast routing using the BGP MDT address family.
- BImplement a pseudowire to allow only broadcast traffic to pass between CE1 and CE2.
- CImplement OSPF end to end and use virtual links to make connections across areas.
- DImplement Unified MPLS between the CSC and PE routers.
How the community answered
(27 responses)- A11% (3)
- B4% (1)
- C4% (1)
- D81% (22)
Explanation
In this scenario, the Customer Service Carrier (CSC) routers (CSC-CE1 and CSC-CE2) are now in different Autonomous Systems (AS) from PE1 and PE2. Unified MPLS is the most suitable approach to ensure seamless Layer 3 connectivity between CE1 and CE2 while maintaining scalability and inter-AS communication. Unified MPLS simplifies MPLS configurations across multiple autonomous systems by enabling label distribution and Layer 3 VPN services without extensive reconfiguration or loss of scalability. It allows the CSC routers to establish MPLS LSPs and enables seamless VPN traffic forwarding between PE1 and PE2.
Topics
Community Discussion
No community discussion yet for this question.