A. 10.2.3.0/30

B. 10.1.3.0/30

C. 10.1.2.0/30

D. 10.3.4.0/30

A. Filter-polic

B. AS-Path list

C. ACL

D. Route-polic

A. Since BGP supports CIDR, BGP auto-aggregation can automatically aggregate the routes existing in the routing table into routes with natural masks.

B. There are two types of BGP aggregation: automatic aggregation and manual aggregation.

C. When applying BGP manual aggregation, you can use the attribute-polic- parameter to change the attributes of the aggregated routes for more flexible control.

D. BGP manual aggregation can advertise aggregated routes and specific routes at the same time, or only select specific routes to generate aggregated routes.

A. AS_PATH is an optional pass attribute

B. When advertising routes to EBGP neighbors, if the AS_PATH of a route contains the AS number of the opposite end, the route will not be sent to the opposite end

C. All BGP routes must contain AS_PATH, even if AS_PATH is empty

D. When advertising routes to EBGP neighbors, if the AS_PATH of a route contains the AS number of the opposite end, the route is ignored

A. Tpe3 LSA

B. Tpe4 LSA

C. Tpe5 LSA

D. Tpe7 LSA