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單項(xiàng)選擇題

What is required to enable the use of metrics larger than 63 for traffic engineering in IS-IS?()

A.Nothing, wide metrics are used by default in IS-IS
B.Enable wide-metrics-only under protocol IS-IS
C.Enable traffic-engineering under protocols IS-IS
D.Disable TVL’s 2 and 128 which carry the 6-bit metrics (0-63).

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