JNCIS-SP: Juniper Networks Certified Specialist – Service Provider Routing — Question 26

An established RSVP-signaled LSP suffers a link failure.
What is one action taken by the local RSVP-enabled router?

Answer options

• A. A ResvTear message is sent downstream.
• B. A ResvErr message is sent upstream.
• C. A ResvErr message is sent downstream.
• D. A ResvTear message is sent upstream.

Correct answer: A

Explanation

When a link failure happens in an RSVP-signaled LSP, the local RSVP-enabled router sends a ResvTear message downstream to inform the downstream nodes about the disruption. The other options involve sending error messages which are not the immediate action taken in response to a link failure.