問題文
A provider core carries the tunnels of a multicast VPN in the mode that names the source, and the team is handing out the group addresses. Which rule holds for those addresses?
選択肢
- The edge devices of one VPN may differ but one edge device is barred from reusing a group across two VPNs
- The edge devices of one VPN may differ and one edge device may reuse a group across two VPNs
- The edge devices of one VPN have to agree but one edge device may reuse a group across two VPNs
- The edge devices of one VPN have to agree on a group drawn from the core