单选题
发布日期:2021-01-28
They have been configured with the spanning-tree bpdufilter disable command.
They have been configured with the spanning-tree bpdufilter enable command.
They have been configured with the spanning-tree bpduguard disable command.
They have been configured with the spanning-tree bpduguard enable command.
They have been configured with the spanning-tree guard loop command.
They have been configured with the spanning-tree guard root command.
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