多选题Which three are true about MPLS LSP establishment using RSVP?（） (Choose three.)AOrdered ControlBIndependent ControlCDown Stream UnsolicitedDLiberal Label ManagementEDown Stream On Demand
多选题
Which three are true about MPLS LSP establishment using RSVP?（） (Choose three.)
A
Ordered Control
B
Independent Control
C
Down Stream Unsolicited
D
Liberal Label Management
E
Down Stream On Demand
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