老师题目要求： 花了点时间配置了一下 R1: R1#show run Building configuration... Current configuration : 1225 bytes ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec service password-encryption ! hostname R1 ! boot-start-marker boot-end-marker ! ! no aaa new-model memory-size iomem 5 no ip icmp rate-limit unreachable ! ! ip cef no ip domain lookup ! ! ! ! ... 阅读全文