维护一个局域网

1、案例二 维护一个局域网【背景描述】假设某台路由器的配置文件由于误操作或其他某种原因被破坏了，现在需要从TFTP服务器上的备份配置文件中恢复。【实现功能】 使网络管理员可以备份配置文件，并且将配置恢复到交换机上。【使用设备】设备类型设备名称设备数量交换机路由器router1三层交换机双绞线2计算机1【案例拓扑】【实现过程】步骤1 先查看路由器的配置RA#show running-configBuilding configuration.Current configuration:!version 6.14(9coll)!hostname "RA"!enable passwor

2、d 123!ip subnet-zero!interface Loopback0 ip address !interface FastEthernet0!interface FastEthernet1 ip address shutdown!interface FastEthernet2 no ip address shutdown!interface FastEthernet3 no ip address shutdown!interface Serial0 no ip address shutdown!interface Serial1 ip address encapsulation f

3、rame-relay frame-relay inverse-arp!router rip version 2 network .0 network .0 no auto-summary!ip classless!line con 0 password 123 loginline aux 0line vty 0 4 loginline vty 5 19 login!end测试连通性：在路由器上ping服务器地址Type escape sequence to abort.!Success rate is 100 percent (5/5), round-trip min/avg/max = 1/

4、1/4 ms步骤2 备份路由器配置RA#copy running-config tftpName of configuration file to write ra-confg? config.textBuilding configuration.Writing config.text ! OK或者RA#copy startup-config tftpName of configuration file to write ra-confg? config.textWriting config.text ! OK验证测试：验证TFTP服务器上的配置文件打开TFTP服务器上的配置文件C:confi

5、g.text (用记事本就可以查看)!version 6.14(9coll)!hostname "RA"!enable password 123!ip subnet-zero!interface Loopback0 ip address !interface FastEthernet0!interface FastEthernet1 ip address shutdown!interface FastEthernet2 no ip address shutdown!interface FastEthernet3 no ip address shutdown!interfac

6、e Serial0 no ip address shutdown!interface Serial1 ip address encapsulation frame-relay frame-relay inverse-arp!router rip version 2 network .0 network .0 no auto-summary!ip classless!line con 0 password 123 loginline aux 0line vty 0 4 loginline vty 5 19 login!end步骤3 恢复路由器配置RA#erase startup-configRA

7、#reloadProceed with reload? confirm查看路由器配置Red-Giant#show running-configBuilding configuration.Current configuration:!version 6.14(9coll)!hostname "Red-Giant"!ip subnet-zero!interface FastEthernet0 no ip address shutdown!interface FastEthernet1 no ip address shutdown!interface FastEthernet2

8、 no ip address shutdown!interface FastEthernet3 no ip address shutdown!interface Serial0 no ip address shutdown!interface Serial1 no ip address shutdown!ip classless!line con 0line aux 0line vty 0 4 loginline vty 5 19 login!end先给和TFTP相连的服务器配置一个IP地址测试连通性Type escape sequence to abort.!Success rate is

9、100 percent (5/5), round-trip min/avg/max = 1/1/4 ms然后进行还原Red-Giant#copy tftp running-configName of configuration file red-giant-confg? config.text !OK - 733/32727 bytes验证测试：验证路由器上已经更新为新的配置Red-Giant#copy tftp running-configName of configuration file red-giant-confg? config.text !OK - 733/32727 bytes

10、RA#show running-configBuilding configuration.Current configuration:!version 6.14(9coll)!hostname "RA"!enable password 123!ip subnet-zero!interface Loopback0 ip address !interface FastEthernet0!interface FastEthernet1 ip address shutdown!interface FastEthernet2 no ip address shutdown!interf

11、ace FastEthernet3 no ip address shutdown!interface Serial0 no ip address shutdown!interface Serial1 ip address encapsulation frame-relay frame-relay inverse-arp!router rip version 2 network .0 network .0 no auto-summary!ip classless!line con 0 password 123 loginline aux 0line vty 0 4 loginline vty 5

12、 19 login!end参考配置Red-Giant#copy tftp running-configName of configuration file red-giant-confg? config.text !OK - 733/32727 bytesRA#show running-configBuilding configuration.Current configuration:!version 6.14(9coll)!hostname "RA"!enable password 123!ip subnet-zero!interface Loopback0 ip address !interface FastEthernet0!interface FastEthernet1 ip address shutdown!interface FastEthernet2 no ip address shutdown!interface FastEthernet3 no ip address shutdown!interface Serial0 no ip address shutdown!interface Serial1 ip address encapsulation frame-relay frame-relay in