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单选题
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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