350-501 · Question #496
350-501 Question #496: Real Exam Question with Answer & Explanation
The correct answer is A: The headend router generates a new path to the tail-end router using bandwidth to determine the. In a Segment Routing Traffic Engineering (SR-TE) environment, when a TE tunnel loses its link and no secondary path is in place, the headend router dynamically computes a new path to the tail-end router. This computation considers available bandwidth and other constraints specifi
Question
What happens when a segment-routing TE tunnel loses the link and there is no secondary path in place?
Options
- AThe headend router generates a new path to the tail-end router using bandwidth to determine the
- BThe headend router starts the invalidation timer to bring the tunnel down.
- CThe tail-end router sends an alert to the syslog server that the tunnel and the secondary route are
- DThe headend and tail-end routers revalidate SID hops to determine the proper label stack to
Explanation
In a Segment Routing Traffic Engineering (SR-TE) environment, when a TE tunnel loses its link and no secondary path is in place, the headend router dynamically computes a new path to the tail-end router. This computation considers available bandwidth and other constraints specified in the SR policy to determine the most optimal path. The Segment Routing mechanism then updates the label stack to reflect the new path, ensuring minimal disruption to traffic. This dynamic path computation and rerouting capability is a key feature of SR-TE, improving resiliency and efficiency in the network.
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