Which two statements are correct about VPLS tunnels? (Choose two.)

Which two statements are correct about VPLS tunnels? (Choose two.)
A . LDP-signaled VPLS tunnels only support control bit 0.
B. LDP-signaled VPLS tunnels use auto-discovery to provision sites
C. BGP-signaled VPLS tunnels can use either RSVP or LDP between the PE routers.
D. BGP-signaled VPLS tunnels require manual provisioning of sites.

View Answer

Answer: B,C

Explanation:

VPLS is a Layer 2 VPN technology that allows multiple sites to connect over a shared IP/MPLS network as if they were on the same LAN. VPLS tunnels can be signaled using either Label Distribution Protocol (LDP) or Border Gateway Protocol (BGP). LDP-signaled VPLS tunnels use auto-discovery to provision sites, meaning that PE routers can automatically discover other PE routers that belong to the same VPLS instance