A. by specifying the area-range statement
B. by creating aggregate routes and applying policies
C. by specifying the route-summarization statement
D. by specifying the area-range restrict statement
参考答案:B
A. by specifying the area-range statement
B. by creating aggregate routes and applying policies
C. by specifying the route-summarization statement
D. by specifying the area-range restrict statement
参考答案:B