A、spanning-tree vlan vlan-id primary B、spanning-tree vlan vlan-id root primary C、spanning-tree root primary D、spanning-tree bridge root
A、網(wǎng)元管理層 B、網(wǎng)絡(luò)管理層 C、服務(wù)管理層 D、商務(wù)管理層
A、操作(Operation) B、管理(Administration) C、維護(hù)(MaintancE. D、提供(Provision) E、配置(Configuration)