How does a non-hierarchical VPLS Martini solution prevent looping for broadcasts and multicasts?
A. PEs use a hub and spoke topology, relying on the hub to distribute broadcasts and multicasts.
B. PEs use split horizon operations, never forwarding a packet received on a pseudo wire (PW) over another PW.
C. PEs implement Shortest Path Bridging (SPB) VLAN Mode (SPBV).
D. PEs implement a version of Spanning Tree Protocol (STP). preferably Multiple STP (MSTP).
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