How do you enable interface fe-0/0/0 under the [edit protocols isis] level to form both a Level 1 and Level 2 adjacency?（）
- A、set interface fe-0/0/0.0
- B、set interface fe-0/0/0.0 all level
- C、set interface fe-0/0/0.0 level 3 enable
- D、set interface fe-0/0/0.0 level 1 level 2
正确答案:A
答案解析:有
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