In an end-to-end Layer 2 service, which technology provides the capability to detect, verify, isolate, and report faults across a provider network?
A. carrier detect
B. UDLD
C. BFD
D. CFM
In an end-to-end Layer 2 service, which technology provides the capability to detect, verify, isolate, and report faults across a provider network?
A. carrier detect
B. UDLD
C. BFD
D. CFM