路由器A的配置如下：[RTA]aaa[RTA-aaa]_local-userhuaweipasswordcipherhello_[RTA-aaa]_local-userhuaweiservice-typeppp[RTA]interfaceSerial0[RTA-Serial0]link-protocolppp[RTA-Serial0]_pppauthentication-modepap[RTA-Serial0]ipaddress10.1.1.130路由器B的配置如下：[RTB]interfaceSerial0[RTB-Serial0]link-protocolppp[RTB-Serial0]_pppchapuserhuawei[RTB-Serial0]_pppchappasswordcipherhello[RTB-Serial0]ipaddress10.1.1.230当两台路由器Serial0相连时，两台路由器可以连接到对端。