答案:在RouterA上配置接口IP地址,RouterB和RouterC的配置与RouterA相同,system-view[Huawei]sysnameRouterA[RouterA]interfacegigabitethernet1/0/0[RouterA-GigabitEthernet1/0/0]ipaddress192.168.4.130[RouterA-GigabitEthernet1/0/0]quit[RouterA]interfacegigabitethernet2/0/0[RouterA-GigabitEthernet2/0/0]ipaddress192.168.1.124在RouterA上配置IPv4缺省路由。[RouterA]iproute-static0.0.0.00.0.0.0192.168.4.2在RouterB上配置两条IPv4静态路由[RouterB]iproute-static192.168.1.0255.255.255.0192.168.4.1[RouterB]iproute-static192.168.3.0255.255.255.0192.168.4.6在RouterC上配置IPv4缺省路由。[RouterC]iproute-static0.0.0.00.0.0.0192.168.4.5