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1、【官方提供】【实验文档】【实验0015】【利用TFTP服务器备份恢复路由器配置】【实验名称】利用TFTP服务器备份恢复路由器配置。【实验目的】能够从TFTP服务器备份，并恢复路由器配置。【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。本实验以1台R1762路由器为例，路由器命名为RouterA。1台PC机通过串口（Com）连接到路由器的控制（Console）端口，通过网卡（NIC）连接到路由器的fastethernet0端口。假设PC机的IP地址和网络掩码分别为192.168.0.137，255.255.255.0，路由器的
2、fastethernet1/0端口的IP地址和网络掩码分别为192.168.0.138，255.255.255.0。【实验功能】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。【实验设备】R1762（1台）、PC（1台）、直连线（1条）【实验拓扑】bb.JPG (6.76 KB)2008-11-14 14:46【实验步骤】步骤1. 在路由器上配置fastethernet1/0端口的IP地址。RouterA(config)# interface fastethernet1/0RouterA(config-if)# ip address 192.168.0.138 255.255.255.
3、0RouterA(config-if)# no shutdown验证测试：验证路由器接口fastethernet1/0的IP地址已经配置并且开启，PC机与路由器已有网络连通性。RouterA#showipinterface fastethernet1/0FastEthernet 1/0 is UP, line protocol is UPHardware is PQ2 FCC FAST ETHERNET CONTROLLER FastEthernet, address is 00d0.f888.2be2 (bia 00d0.f888.2be2)Interface address is: 192
4、.168.0.138/24ARP type: ARPA,ARP Timeout: 3600 secondsMTU 1500 bytes, BW 100000 KbitEncapsulation protocol is Ethernet-II, loopback not setKeepalive interval is 10 sec , setCarrier delay is 2 secRXload is 1 ,Txload is 1Queueing strategy: FIFO Output queue 0/40, 0 drops; Input queue 0/75, 0 drops5 min
5、utes input rate 33 bits/sec, 0 packets/sec5 minutes output rate 1 bits/sec, 0 packets/sec 24 packets input, 1814 bytes, 0 no buffer Received 24 broadcasts, 0 runts, 0 giants 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 abort 1 packets output, 42 bytes, 0 underruns 0 output errors, 0 collisions, 4 in
6、terface resetsLink Mode: 100M/Full-Duplex或者：RouterA#show ip interface briefInterface IP-Address(Pri) OK? Statusserial 1/2 no address YES DOWNserial 1/3 no address YES DOWNFastEthernet 1/0 192.168.0.138/24 YES UPFastEthernet 1/1 no address YES DOWNNull 0 no address YES UPRouterA#ping 192.168.0.137 !验
7、证路由器与PC机具有网络连通性Type escape sequence to abort.Sending 5, 100-byte ICMP Echoes to 192.168.0.137, timeout is 2 seconds:!Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms步骤2. 备份路由器配置。RouterA#copy running-config tftp ! 备份路由器的当前配置文件到TFTP服务器Address or name of remote host ?192.168.0.137!输
8、入TFTP服务器IPDestination filename ?config.text !输入下载后生成的文件名Building configuration.Accessing tSuccess : Transmission success,file length 1024或者：RouterA#copy startup-config tftp ! 备份路由器的初始配置文件到TFTP服务器Address or name of remote host ?192.168.0.137 !输入TFTP服务器IPDestination filename ?config.text!输入下载后生成的文件名Bu
9、ilding configuration.Accessing tSuccess : Transmission success,file length 1024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: config.text（用Office Word程序即可打开）。C: config.text文件内容如下：!version 8.32(building 5)!interface serial 1/2clock rate 64000!interface serial 1/3clock rate 64000!interface FastEthernet 1/0ip
10、address 192.168.0.138 255.255.255.0duplex autospeed auto!interface FastEthernet 1/1duplex autospeed auto!interface Null 0!line con 0line aux 0line vty 0 4login!end步骤3. 恢复路由器配置。RouterA#delete flash:config.text !删除路由器原有配置信息RouterA#copy tftp startup-config ! 恢复配置到路由器的初始配置文件中Address or name of remote ho
11、st ?192.168.0.137 !输入TFTP服务器的IPSource filename ?config.text !输入文件名Accessing tWrite file to flash successfully!RouterA# copy startup-config running-config ! 将初始配置文件拷贝到路由器的当前配置文件中验证测试：验证路由器已经更改为新的配置。RouterA#show startup-config ! 验证路由器的初始配置文件为新的文件!Building configuration.(building 53)Current configurati
12、on : 406 bytesCopyright (c) 2004 by Re!version 8.32(building 5)!interface serial 1/2clock rate 64000!interface FastEthernet 1/0ip address 192.168.0.138 255.255.255.0duplex autospeed auto!interface FastEthernet 1/1duplex autospeed auto!interface Null 0!line con 0line aux 0line vty 0 4login!end【注意事项】在
13、备份、恢复配置时，须验证路由器与PC机（TFTP Server）具有网络连通性。【参考配置】RouterA #show running-configBuilding configuration.(building 53)Current configuration : 406 bytesCopyright (c) 2004 by Re!version 8.32(building 5)interface serial 1/2clock rate 64000!interface FastEthernet 1/0ip address 192.168.0.138 255.255.255.0duplex autospeed auto!interface FastEthernet 1/1duplex autospeed autointerface Null 0!line con 0line aux 0line vty 0 4login!end
