多选题Which four services use the inner labels of an MPLS label stack？ （）AMPLS VPNBswitching path in MPLS coreCCisco MPLS Traffic Engineering and Fast RerouteDMPLS over ATMEVPN over Traffic Engineering coreFany transport over MPLS
多选题
Which four services use the inner labels of an MPLS label stack？ （）
A
MPLS VPN
B
switching path in MPLS core
C
Cisco MPLS Traffic Engineering and Fast Reroute
D
MPLS over ATM
E
VPN over Traffic Engineering core
F
any transport over MPLS
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