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1、Rommon 下上传 IOS 步骤 当设备 IOS 丢失或不小心把唯一的 IOS 删除时，可以在 rommon 模式下，把 IOS 上传到设备中，根据设备的不同，可分为两种情况：情况 1：现在的新设备带有 MGT 管理接口 出处：出处：http:/ 适用范围适用范围：cisco4500/4000 系列 ios 版本恢复（我们是在 4948 上做的如下配置，ios得以恢复，推理带有 MGT 的新设备可以做如下尝试）进入正题进入正题 1、设备加电，按下“control”+“C”，然后进入 rommon 模式下。rommon 1 set PS1=rommon!RommonBuild=5 Config
2、Reg=0 x2102 BOOT=bootflash:cat4000-is-mz.121-11b.EW,1 SkipDiags=0 BSI=0 RET_2_RTS=13:36:46 UTC Tue Aug 15 2000 RET_2_RUTC=966346606 BootStatus=Failure BootedFileName=bootflash:cat4000-is-mz.121-11b.EW RommonVer=12.1(11br)EW 2、以上参数中，BOOT 参数中 IOS 文件已经不存在了，所以要重设参数：rommon 2 unset boot 3、这时用双绞线把你的 PC 和设备
3、连接起来，设备一端插在 MGT 管理接口，将 PC 的 IP地址配置为 10.1.1.1 rommon 3 set interface fa1 10.1.1.11 255.255.255.0 rommon 4 set ip route default 10.1.1.254（如果 PC 跟设备不是直连的情况下使用，作用是让设备与 TFTP 服务器能够通信）4、查看 ip 地址设置：rommon 5 set PS1=rommon!Fa1Enable=1 RommonVer=12.2(31r)SGA2 BOOT=EnableAutoConfig=1 ConsecPostPassedCnt=4 RET
4、_2_RTS=02:17:34 UTC Wed Oct 28 2009 RET_2_RCALTS=1256696254 ConfigReg=0 xc441 IP_ADDRESS=10.10.10.11 IP_SUBNET_MASK=255.255.255.0 DEFAULT_GATEWAY=10.10.10.255 TFTP_FILE=cat4500-entservices-mz.122-52.SG.bin TFTP_SERVER=10.10.10.1 IpAddr=10.10.10.11 Netmask=255.255.255.0 Broadcast=10.10.10.255 5、确认配置正
5、确后，测试设备到 TFTP 服务器的连通性 rommon 6 ping 10.1.1.1 Host 10.1.1.1 is alive 6、网络连通性测试没有问题后，开始从 tftp 服务器启动 IOS:rommon 7 boot tftp:/10.10.10.1/cat4500-entservices-mz.122-52.SG.bin Tftp Session details are.Filename :/cat4500-entservices-mz.122-52.SG.bin IP Address :10.10.10.11 Loading from TftpServer:10.10.10.
6、1 Received data packet#33321 Loaded 17060272 bytes successfully.Rommon reg:0 xE2004180#k2diags version 5.2_d prod:WS-C4948 part:73-9130-11 serial:FOX1318GC8W Power-on-self-test for Module 1:WS-C4948 Port/Test Status:(.=Pass,F=Fail,U=Untested)Cpu Subsystem Tests.seeprom:.temperature_sensor:.Port Traf
7、fic:L2 Asic Loopback.0:.1:.2:.3:.4:.5:.6:.7:.8:.9:.10:.11:.12:.13:.14:.15:.16:.17:.18:.19:.20:.21:.22:.23:.24:.25:.26:.27:.28:.29:.30:.31:.32:.33:.34:.35:.36:.37:.38:.39:.40:.41:.42:.43:.44:.45:.46:.47:.Port Traffic:L3 Asic Loopback.0:.1:.2:.3:.4:.5:.6:.7:.8:.9:.10:.11:.12:.13:.14:.15:.16:.17:.18:.1
8、9:.20:.21:.22:.23:.24:.25:.26:.27:.28:.29:.30:.31:.32:.33:.34:.35:.36:.37:.38:.39:.40:.41:.42:.43:.44:.45:.46:.47:.Switch Subsystem Memory.1:.2:.3:.4:.5:.6:.7:.8:.9:.10:.11:.12:.13:.14:.15:.16:.17:.18:.19:.20:.21:.22:.23:.24:.25:.26:.27:.28:.29:.30:.31:.32:.33:.34:.35:.36:.37:.38:.39:.40:.41:.42:.43
9、:.44:.45:.46:.47:.48:.49:.50:.51:.52:.53:.54:.55:.Module 1 Passed Exiting to ios.Rommon reg:0 xE2000180#Restricted Rights Legend Use,duplication,or disclosure by the Government is subject to restrictions as set forth in subparagraph(c)of the Commercial Computer Software-Restricted Rights clause at F
10、AR sec.52.227-19 and subparagraph(c)(1)(ii)of the Rights in Technical Data and Computer Software clause at DFARS sec.252.227-7013.cisco Systems,Inc.170 West Tasman Drive San Jose,California 95134-1706 Cisco IOS Software,Catalyst 4500 L3 Switch Software(cat4500-ENTSERVICES-M),Version 12.2(52)SG,RELEA
11、SE SOFTWARE(fc1)Technical Support:http:/ Copyright(c)1986-2009 by Cisco Systems,Inc.Compiled Tue 12-May-09 17:58 by prod_rel_team Image text-base:0 x10000000,data-base:0 x11F07228 cisco WS-C4948(MPC8245)processor(revision 0)with 262144K bytes of memory.Processor board ID FOX1318GC8W MPC8245 CPU at 2
12、66Mhz,Fixed Module Last reset from PowerUp 1 Virtual Ethernet interface 48 Gigabit Ethernet interfaces 511K bytes of non-volatile configuration memory.Press RETURN to get started!*Mar 1 00:00:01.815:%C4K_IOSSYS-3-BLANKSTARTUPCONFIG:Blank or invalid startup-config,booting up with defaults*Oct 28 03:0
13、5:50.567:%C4K_IOSMODPORTMAN-4-POWERSUPPLYBAD:Power supply 1 has failed or been turned off*Oct 28 03:05:59.443:%SPANTREE-5-EXTENDED_SYSID:Extended SysId enabled for type vlan*Oct 28 03:06:01.359:%SYS-6-STARTUP_CONFIG_IGNORED:System startup configuration is ignored based on the configuration register
14、setting.*Oct 28 03:06:01.895:%SYS-5-RESTART:System restarted-Cisco IOS Software,Catalyst 4500 L3 Switch Software(cat4500-ENTSERVICES-M),Version 12.2(52)SG,RELEASE SOFTWARE(fc1)Technical Support:http:/ Copyright(c)1986-2009 by Cisco Systems,Inc.Compiled Tue 12-May-09 17:58 by prod_rel_team*Oct 28 03:
15、06:01.907:%C4K_IOSMODPORTMAN-6-MODULEONLINE:Module 1(WS-C4948 S/N:FOX1318GC8W Hw:1.7)is online Switch 7、设备启动完毕，可进入正常 IOS 上传过程（从这一步就没有特别之处了，和平常上传从这一步就没有特别之处了，和平常上传 iosios步骤一直）步骤一直）SwitchenSwitchen Switch#Switch#dirSwitch#dir Directory of bootflash:/No files in directory 60817408 bytes total(12062968
16、bytes free)Switch#format bootflash:Switch#format bootflash:Format operation may take a while.Continue?confirm Format operation will destroy all data in bootflash:.Continue?confirm Format of bootflash complete Switch#Switch#conf tSwitch#conf t Enter configuration commands,one per line.End with CNTL/Z
17、.Switch(config)#int g1/1 Switch(configSwitch(config-if)#no swiif)#no swi S Switch(configwitch(config-if)#ip addr 10.10.10.2 255.255.255.0if)#ip addr 10.10.10.2 255.255.255.0 Switch(config-if)#end Switch#*Oct 28 03:10:27.715:%SYS-5-CONFIG_I:Configured from console by consol Switch#ping 10.10.10.1 Typ
18、e escape sequence to abort.Sending 5,100-byte ICMP Echos to 10.10.10.1,timeout is 2 seconds:.!Success rate is 80 percent(4/5),round-trip min/avg/max=1/1/1 ms Switch#copy tftp bootflash:Switch#copy tftp bootflash:Address or name of remote host?10.10.10.1Address or name of remote host?10.10.10.1 Sourc
19、e filename?cat4500Source filename?cat4500-entservicesentservices-mz.122mz.122-52.SG.bin52.SG.bin Destination filename cat4500Destination filename cat4500-entservicesentservices-mz.122mz.122-52.SG.bin?52.SG.bin?Accessing tftp:/10.10.10.1/cat4500-entservices-mz.122-52.SG.bin.Loading cat4500-entservice
20、s-mz.122-52.SG.bin from 10.10.10.1(via GigabitEthernet1/1):!OK-17060272 bytes CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
21、CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 1
22、7060272 bytes copied in 81.644 secs(208959 bytes/sec)情况 2：设备没有 MGT 管理接口，但支持 XMODEM 协议 出处出处：http:/ 此文档此文档适用的适用的设备为设备为没有没有 MGTMGT 接口接口但支持但支持 XmodemXmodem 协议协议的低端路由器和交换机，例如的低端路由器和交换机，例如CiscoCisco 的的 2626 系列路由器和系列路由器和 2929、3535 系列交换系列交换机机.通过 Xmodem 命令（注：Xmodem 与实际的 modem 没有任何联系 只是一个传输协议 数据是通过终端的串口和路由器的
23、Console 口灌进去的）升级 IOS，具体步骤如下：1、用 Cisco 原配的线缆连接路由器的 console 口与 PC 机的 COM1，使用 PC 机的超级终端软件访问路由器，这时不需要对 PC 和路由器配置任何地址。2、在这个模式下，输入 Xmodem 命令，即：rommon 1 xmodem-c c2600-i-mz.122-11.bin （-c 是带校验，c2600-i-mz.122-11.bin 为存放在 PC 机上的 IOS 映像文件）WARNING：All existing data in bootflash will be lost！Invoke this applica
24、tion only for disaster recovery.Do you wish to continue？y/n n：y Ready to receive file c2600-i-mz.122-11.bin （此时在超级终端的传送栏目=选择发送文件选项=再选择Xmodem 并指明IOS映像文件所在的路径，按发送即开始上传 IOS，等待时间很长，视 IOS 的大小和传输速度。）Erasing flash at 0 x607c0000 program flash location 0 x605b0000 Download Complete！采用这种方法时，由于使用 console 口来传送
25、，速率为 9600bps，需要时间较长。因此可修改 console 口速率利用 xmodem 命令实现快速升级 IOS。具体方法如下：rommon 1 confreg 回车 Configuration Summary enabled are:load rom after netboot fails console baud:9600 boot:image specified by the boot system commands or default to:cisco2-C2600 do you wish to change the configuration?y/n n:y(选择 yes)e
26、nable diagnostic mode?y/n n:n(选择 no)enable use net in IP bcast address?y/n n:n(选择 no)disable load rom after netboot fails?y/n n:n(选择 no)enable use all zero broadcast?y/n n:n(选择 no)enable break/abort has effect?y/n n:n(选择 no)enable ignore system config info?y/n n:n(选择 no)change console baud rate?y/n
27、n:y(选择 yes)enter rate:0=9600,1=4800,2=1200,3=2400 4=19200,5=38400,6=57600,7=115200 0:7(选择 7,用最大的 11520 速率的 xmodem 传输)change the boot characteristics?y/n n:n(选择 no)Configuration Summary enabled are:load rom after netboot fails console baud:115200 boot:image specified by the boot system commands or de
28、fault to:cisco2-C2600 do you wish to change the configuration?y/n n:n(选择 no)You must reset or power cycle for new config to take effect rommon 2 reset 回车 注意：在按 reset 键前，需要修改串口速度（我的电脑-端口属性-串口速度调为115200），然后再修改超级终端里设置速率为 115200，记住，一定要这么做，否则会出现乱码！然后关闭这个超级终端，重新建立一个超级终端连接，重新启动系统后，出现 rommon 1 然后,输入 rommon
29、1 xmodem-r Do not start the sending program yet.Invoke this application only for disaster recovery.Do you wish to continue?y/n n:y(选择 yes)Ready to receive file.此时，在超级终端的菜单上的“传送”-“发送文件”-选择 IOS 映像文件所在地以及选择使用“xmodem”协议，点击“发送”即可。等待 10-20 分钟左右就可升级完 3-6M 的 IOS 文件！待升级完成后，请记住修改回计算机串口与超级终端、路由器 confreg 下的 xmo
30、dem 等传输速率为 9600bps。方法如下：Routeren 进入新 IOS 的特权模式 Router#reload 重启系统 Proceed with reload?confirm 回车 00:01:04:%SYS-5-RELOAD:Reload requested System Bootstrap,Version 11.3(2)XA4,RELEASE SOFTWARE(fc1)Copyright(c)1999 by cisco Systems,Inc.TAC:Home:SW:IOS:Specials for info PC=0 xfff0a530,Vector=0 x500,SP=0
31、x680127b0 C2600 platform with 24576 Kbytes of main memory PC=0 xfff0a530,Vector=0 x500,SP=0 x80004684 monitor:command boot aborted due to user interrupt 30 秒内按 ctrl+break 键 rommon 1 confreg（输入“confreg”命令）Configuration Summary enabled are:load rom after netboot fails console baud:115200 boot:image sp
32、ecified by the boot system commands or default to:cisco2-C2600 do you wish to change the configuration?y/n n:y(选择 yes)enable diagnostic mode?y/n n:n(选择 no)enable use nn IP bcast address?y/n n:n(选择 no)disable load rom after netboot fails?y/n n:n(选择 no)enable use all zero broadcast?y/n n:n(选择 no)enabl
33、e break/abort has effect?y/n n:n(选择 no)enable ignore system config info?y/n n:n(选择 no)change console baud rate?y/n n:y(选择 yes)enter rate:0=9600,1=4800,2=1200,3=2400 4=19200,5=38400,6=57600,7=115200 7:0(选择 0,改回用标准速率速率 9600 的 xmodem 传输)change the boot characteristics?y/n n:n(选择 no)Configuration Summar
34、y enabled are:load rom after netboot fails console baud:9600 boot:image specified by the boot system commands or default to:cisco2-C2600 do you wish to change the configuration?y/n n:n You must reset or power cycle for new config to take effect rommon 2 此时手工改回计算机串口与超级终端 2 者传输速率为 9600 然后敲入 rommon 2 reset 最好关掉电源后，重新启动。然后正常操作设备即可