Which two implementations are standard Virtual Private LAN Service (VPLS) implementations that aresupported by the IETF?()
- AVPLS uses LDP for signaling.
- BVPLS uses BGP for autodiscovery and signaling.
- CVPLS uses extended IS-IS for signaling
- DVPLS uses OSPF version 3 for auto discovery and signaling
- EVPLS uses spanning tree for signaling