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单选题

Which of these statements best describes VPLS?()

发布日期:2020-04-11

Which of these statements best describes VPLS?()
A

Neither broadcast nor multicast traffic is ever flooded in VPLS.

B

Multicast traffic is flooded but broadcast traffic is not flooded in VPLS.

C

VPLS emulates an Ethernet switch, with each EMS being analogous to a VLAN.

D

Because U-PE devices act as IEEE 802.1 devices, the VPLS core must use STP.

E

When the provider experiences an outage, IP re-routing restores PW connectivity and MAC re-learning is needed.

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