300-515 · Question #168
To maintain appropriate SLA levels, a network engineer must ensure that the ISP's network devices can perform fault detection, fault isolation, and fault reporting for LAN, MAN, and WAN segments…
The correct answer is B. Implement Ethernet CFM to verify connectivity and detect problems in the network. Ethernet CFM (Connectivity Fault Management, IEEE 802.1ag / ITU-T Y.1731) is designed specifically for carrier-grade Ethernet OAM. It provides scalable, hierarchical fault detection, isolation, and reporting across LAN, MAN, and WAN Ethernet segments. It supports proactive…
Question
To maintain appropriate SLA levels, a network engineer must ensure that the ISP’s network devices can perform fault detection, fault isolation, and fault reporting for LAN, MAN, and WAN segments. The implementation must adhere to these requirements:
- supported on all Ethernet interfaces
- allows for proactive fault detection and notification
- provides real-time monitoring and troubleshooting
- scalable and able to support large-scale Ethernet networks
Which action must the network engineer take to meet the requirements-
Options
- AEnable IEEE 802.3ah EFM to gather performance metrics and provide alerts.
- BImplement Ethernet CFM to verify connectivity and detect problems in the network.
- CImplement IP SLA to monitor network performance, packet drops, and network segment routing
- DEnable E-PM to identify and troubleshoot performance issues.
How the community answered
(56 responses)- A13% (7)
- B77% (43)
- C7% (4)
- D4% (2)
Explanation
Ethernet CFM (Connectivity Fault Management, IEEE 802.1ag / ITU-T Y.1731) is designed specifically for carrier-grade Ethernet OAM. It provides scalable, hierarchical fault detection, isolation, and reporting across LAN, MAN, and WAN Ethernet segments. It supports proactive monitoring, real-time troubleshooting, and is available on all Ethernet interfaces, meeting the SLA requirements listed.
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