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單項(xiàng)選擇題

In IS-IS, how does the restarting router inform its helpers that a restarts event occurred?()

A.Sending out a graceful restart PDU
B.Sending an LSP that contains no TLVs.
C.Sending out a restarts TLV with the RR bit set.
D.Reflooding its LSP with a maximum sequence number.

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