Refer to the exhibit. A network operator is troubleshooting TE tunnels and discovers that the soft preemption is not working as desired. Where should the soft preemption be applied to solve the issue?

Question

Exhibit

Options

• Aon the tail-end device for tunnel-te1 192.168.0.7
• Bunder the tunnel-te1 interface on PE1
• Cexplicitly for tunnel-te 1 under the Cisco MPLS TE configuration mode after the timeout setting
• DUnder the interface Loopback0 necessary for this deployment type.

• A
  7% (1)
• B
  86% (12)
• D
  7% (1)

Explanation

Soft preemption in MPLS Traffic Engineering must be configured on the head-end router under the specific tunnel-te interface. PE1 is the head-end (originating) router for tunnel-te1, so the soft-preemption configuration belongs under that tunnel interface. Soft preemption is a per-tunnel, head-end setting that tells the network to gracefully reroute traffic instead of hard-dropping it when preemption occurs. The tail-end device (192.168.0.7) does not control preemption behavior. The global MPLS TE configuration mode sets the timeout value, but the soft-preemption feature itself must be enabled on the tunnel interface. Loopback0 has no role in preemption.

No community discussion yet for this question.