300-320 · Question #728
You must connect two data centers via Layer 2 by using an MPLS network. Which of these do you use to create a scalable design?
The correct answer is C. VPLS. VPLS (Virtual Private LAN Service) (C) is the correct choice for a scalable Layer 2 connection between data centers over an MPLS network. VPLS uses MPLS pseudowires to create a virtual switched LAN that spans multiple sites, making geographically separate data centers appear to…
Question
You must connect two data centers via Layer 2 by using an MPLS network. Which of these do you use to create a scalable design?
Options
- AvPC
- BVSS
- CVPLS
- DFabricPath
How the community answered
(44 responses)- A7% (3)
- B14% (6)
- C77% (34)
- D2% (1)
Explanation
VPLS (Virtual Private LAN Service) (C) is the correct choice for a scalable Layer 2 connection between data centers over an MPLS network. VPLS uses MPLS pseudowires to create a virtual switched LAN that spans multiple sites, making geographically separate data centers appear to be on the same Layer 2 segment. It scales well because it leverages the MPLS provider infrastructure and supports multiple sites through a full-mesh or hierarchical pseudowire topology. vPC (A) is a Cisco technology for aggregating port channels across two local switches - it does not extend Layer 2 over MPLS. VSS (B) is a Cisco chassis virtualization technology for combining two switches locally, not for WAN extension. FabricPath (D) is Cisco's TRILL-based data center fabric technology for within-DC Layer 2 scalability, not for inter-DC MPLS transport.
Topics
Community Discussion
No community discussion yet for this question.