I'm pretty sure C is also correct. The EFM standard can be used to trigger MPLS protection mechanisms at the core when physical failure detection is not possible. I mean, why else would they include that option?
A, E, and D are the correct answers. The IEEE 802.3ah EFM standard is used for monitoring and troubleshooting point-to-point full-duplex links, as well as in the last-mile connection to the Service Provider demarcation device. It should not be used at the core to trigger MPLS protection, as BFD is the recommended method for that purpose.
Vallie
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8 days agoAlpha
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12 days ago