多项选择题

IntheCarrierSupportCarrier（CsC）feature，whichtwoprotocol……

In the Carrier Support Carrier （CsC） feature， which two protocols run CSC-PE and CSC-CS ？（）

A.EBGPv4 with a sending community
B.IGP and LDP
C.EBGPv4 with a sending label
D.IGP and EBGPv4
E.IGP and RSVP

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