When a link flaps, an mpls ldp session will also flap. Which feature minimizes traffic loss and provides faster convergence after the link is re-established?

When a link flaps, an mpls ldp session will also flap. Which feature minimizes traffic loss and provides faster convergence after the link is re-established?
A . BFD
B . MPLS LDP IGP SYNC
C . graceful restart
D . LDP session protection
E . LDP nonstop routing

Answer: D

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