A service provider would like to provide a service allowing customers to span VLANs across multiple campuses. Which configuration will allow this service provider to achieve its desired result with a minimal effect on the scalability of PE routers?
A) RFC 2547-based service, with MPLS/LDP between PE and CE (in other words, CsC)
B) VPWS service, with 802.1Q between PE and CE
C) RFC 2547-based service, with L2TPv3 between PE and CE
D) VPWS service, with QinQ between PE and CE

Question

Quizplus · Accepted Answer

QinQ (802.1ad) allows VLAN stacking, which is efficient for spanning VLANs across multiple campuses with minimal impact on the scalability of PE routers.

A Service Provider Would Like to Provide a Service Allowing