A.ipaccess-listextend TEST 10deny ip 192.168.10.00.0.0.255192.168.20.0.0.0.0.255在svi10口调用即可 B.ipaccess-listextend TEST 10deny ip 192.168.10.00.0.0.255192.168.20.0.0.0.0.25520permit ip 192.168.10.0.0.0.255Any 在SVI10口调用即可 C.ipaccess-listextend TEST 10deny ip 192.168.10.00.0.0.255192.168.20.0.0.0.0.25520permit ip 192.168.10.0.0.0.255Any 在核心交换机上联到出口路由器的扣调用即可