A PE provides VLAN VPLS service to a CE attached with two links. You want to prevent Layer 2 loops and
provide link redundancy.
Which two actions will accomplish this task? (Choose two.)
A.
Place both interfaces in a link aggregation group.
B.
Configure different VLANs on each interface.
C.
Configure all VLANs on both interfaces, on the PE, and on the CE.
D.
Configure Spanning Tree Protocol between the PE and the CE.
Explanation:
D: To prevent the formation of Layer 2 loops between the CE devices and the multihomed PE routers, Juniper
recommends that you employ the Spanning Tree Protocol (STP) on your CE devices. Layer 2 loops can form
due to incorrect configuration. Temporary Layer 2 loops can also form during convergence after a change in the
network topology.
http://www.juniper.net/documentation/en_US/junos16.1/topics/topic-map/vpls-bgpmultihoming.html