The routing policy tools that BGP can use mainly include Filterpolicy and Route-policy. Its Fiterpolicy can only filter routes, and Rote-policy can only modify routes.

According to this picture, we can judge that R4 is on?

by executing___________The command can completely isolate the second and third layer users of different ports on the same LAN and cannot communicate. (Please use English and lowercase letters to complete the command, and the command cannot be abbreviated)

Regarding the BGPI MPLS IPVPN network architecture, which of the following descriptions is wrong?

In the VLAN aggregation technology, multiple Sub-VLANs are used to isolate wide-open domains, and these Sub-VLANs are aggregated.
Synthesizing a logical Super-VLAN, a company divides different departments into different Sub-VLANs, because Sub-VL AN not only includes physical connection, but also can establish three-layer VLAN ANIF interface, which can directly carry out three-layer communication with external network.