300-515 · Question #142
Refer to the exhibit. A customer has multiple physical locations connected by an ISP in AS 65516 that runs MPLS in the core. Customer traffic passes through the ISP core using Layer 2. A network…
The correct answer is D. Configure the pseudowire encapsulation to be MPLS. The ISP core is MPLS-enabled, so the AToM pseudowire between PEs must use encapsulation mpls. Without MPLS encapsulation on the xconnect/pseudowire, the VC will not come up and traffic (the ping) fails. Configuring the pseudowire to use MPLS encapsulation resolves the issue.
Question
Refer to the exhibit. A customer has multiple physical locations connected by an ISP in AS 65516 that runs MPLS in the core. Customer traffic passes through the ISP core using Layer 2. A network engineer just configured a pseudowire to provide better service. However, when the engineer verified connectivity using a continuous ping between sites, the ping failed. Which action resolves the issue?
Exhibit
Options
- AConfigure a static route for the pseudowire to identify which path to use to reach the tunnel
- BConfigure MPLS Traffic Engineering tunnels in the global configuration for all devices in AS
- CConfigure the tunnel source and destination to be in the same subnet.
- DConfigure the pseudowire encapsulation to be MPLS.
How the community answered
(37 responses)- A5% (2)
- B11% (4)
- C27% (10)
- D57% (21)
Explanation
The ISP core is MPLS-enabled, so the AToM pseudowire between PEs must use encapsulation mpls. Without MPLS encapsulation on the xconnect/pseudowire, the VC will not come up and traffic (the ping) fails. Configuring the pseudowire to use MPLS encapsulation resolves the issue.
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