如何从一个设备复制系统镜像到另一个

简介

本文档说明了如何在同一个路由器内以及不同路由器之间将系统镜像从一个设备复制到另一个设备。

先决条件

要求

本文档没有任何特定的要求。

使用的组件

本文档不限于特定的软件和硬件版本。为本文的目的使用的平台是思科2500系列路由器和Cisco 3600系列路由器。

规则

有关文档规则的详细信息，请参阅 Cisco 技术提示规则。

复制从设备到设备在同一路由器里面

复制的系统镜像表下面的提供options命令从一个设备到另一个(方法根据另外平台变化) ：

命令汇总

表下面的列表您能从TFTP server复制镜像的多种位置。这些选项根据另外平台变化。请参见使用URL前缀欲知更多信息和为了得知更多这些选项中的每一个。

Router#copy tftp ?

镜像复制使用的三个最普通的命令是：

• copy tftp flash

• copy rcp flash

• 复制slot0 ：slot1 ：

下面的示例说明程序为复制系统镜像跟随从一个设备到另一个(例如，从一张slot/磁盘到另一张slot/磁盘)在Cisco 3600系列路由器。

详细示例

router#show slot0:

!--- This command is used to view the contents of slot 0

-#- ED --type-- --crc--- -seek-- nlen -length- -----date/time------  name
1 .D unknown 5E8B84E6 209D8 11 2392 Jan 22 2000 00:22:42 flashconfig 
2 ..  image 5E7BAE19 B623C4 22 11802988 Jan 22 2000 00:23:18 rsp-jsv-mz.1 20-8.0.2.T  

router#show slot1:

!--- This command is used to view the contents of slot 1

-#- ED --type-- --crc--- -seek-- nlen -length- -----date/time------  name 
1 .. unknown 6A2B4BA7 6FA9E0 20 7186784 Jul 30 1999 15:05:19 rsp-jv-mz.11  1-26.CC1 
2 .. config 631F0D8B 6FB1EC 6 1929 Oct 19 1999 06:15:49 config 
3 .. config  631F0D8B 6FB9F8 7 1929 Oct 19 1999 06:16:03 config1 

如下所示的copy命令用于从一个设备复制系统镜像镜象文件到另一个。在以下示例中，系统镜像从slot0被复制到slot1。

router#copy slot0: slot1 
Source  filename []? rsp-jsv-mz.120-8.0.2.T 

!--- Enter the file name of the system image to be copied

Destination filename [slot1]? 

Erase slot1: before copying? [confirm]Erasing the slot1 filesystem will remove 
all files! Continue? [confirm]
Erasing device... eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee 
...erasedeeErase of slot1: complete
Copy in progress...CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCC


! --- Output Suppressed


Verifying checksum...  OK (0xE884)11802988 bytes copied in 346.312 secs 
(38481 bytes/sec) 

复制从一个路由器到另一个

下面跟随的步骤为复制Cisco IOS软件镜像从作为TFTP server的路由器对另一个路由器。在本例中的两路由器是思科2500系列路由器。在本例中， Router1是TFTP server，并且Router2是Cisco IOS软件镜像被复制的路由器。

在您开始前，使用ping命令，请验证Router1和Router2之间的连接。

1. 用show flash命令检查在Router1的图像大小。

   Router1#show flash
   System flash directory:
   File Length Name/status
   1 15694836 /c2500-js-l.122-10b
   
    !--- Cisco IOS image file to be copied
   
   [15694900 bytes used, 1082316 available, 16777216 total]
   16384K bytes of processor board System flash (Read ONLY)
   

2. 用show flash命令验证足够的空间是否检查在Router2的图像大小是可用的在Router2为了能将被复制的系统镜像镜象文件。

   Router2#show flash   
   
   System flash directory: 
   File  Length   Name/status 
   
    1   11173264  c2500-jos56i-l.120-9.bin 
   [11173328 bytes used, 5603888 available, 16777216 total]     
   16384K bytes of processor board System flash (Read ONLY) 
   

   注意： 如果有复制系统镜像镜象文件的足够的空间，则原始一个可以保留，并且新的文件在额外的内存空间可以被复制。如果没有可用足够的空间，作为在这种情况下，则删除从闪存的现有文件，当下载新的时。它是备份现有的系统镜像的一种好习惯对TFTP server使用copy flash tftp命令。

3. 使用configure terminal命令，配置Router1作为TFTP server。

   Router1#configure terminal
   Enter configuration commands, one per line.  End with CNTL/Z. 
   
   Router1(config)#tftp-server ?   
     bootflash:  Allow URL file TFTP load requests  
     disk0:      Allow URL file TFTP load requests  
     disk1:      Allow URL file TFTP load requests  
     flash:      Allow URL file TFTP load requests   
     flh:        Allow URL file TFTP load requests   
     lex:        Allow URL file TFTP load requests   
     null:       Allow URL file TFTP load requests   
     nvram:      Allow URL file TFTP load requests   
     slot0:      Allow URL file TFTP load requests  
     slot1:      Allow URL file TFTP load requests  
     system:     Allow URL file TFTP load requests 

   注意： 为tftp-server命令给出的以上选项可能为另外平台变化。

   Router1(config)#tftp-server flash:? 
   flash:/c2500-js-l.122-10b 
   
   !--- The Cisco IOS image file name.
   
   Router1(config)#tftp-server flash:/c2500-js-l.122-10b 
   
   !--- This command configures the router as a TFTP server.
   
   Router1(config)#^Z 
   

4. 当配置时TFTP server，使用copy tftp flash命令，请从Router1下载指定的镜像到Router2。

   Router2#copy tftp flash                         
                             ****  NOTICE  ****
   Flash load helper v1.0
   This process will accept the copy options and then terminate
   the current system image to use the ROM based image for the copy.
   Routing functionality will not be available during that time.
   If you are logged in via telnet, this connection will terminate.
   Users with console access can see the results of the copy operation.                         
                           ---- ******** ----
   Proceed? [confirm]
   Address or name of remote host []? 10.10.10.1 
   
   !--- Enter the IP address of the TFTP Server
   
   Source filename []? /c2500-js-l.122-10b
   
   
   !--- This is the filename of the Cisco IOS image !--- that you want to copy from the TFTP server
   
   
   Destination filename [c2500-js-l.122-10b]?
   
   
   !--- Press 'Enter'
    
   
   
   Accessing tftp://10.10.10.1//c2500-js-l.122-10b...
   Erase flash: before copying? [confirm]
   
   18:37:54: %SYS-5-RELOAD: Reload requested 
   
   !--- The reload is platform-specific and is only for the !--- Run-from-flash systems.*
   
   
   ** System going down for Flash upgrade ** 
   
   %SYS-4-CONFIG_NEWER: Configurations from version 12.2 may not be 
   correctly understood.
   %FLH: /c2500-js-l.122-10b from 10.10.10.1 to flash ...
   
   System flash directory:
   File Length Name/status
   1 15694836 /c2500-js-l.122-10b
   [15694900 bytes used, 1082316 available, 16777216 total]
   Accessing file '/c2500-js-l.122-10b' on 10.10.10.1...
   Loading /c2500-js-l.122-10b from 10.10.10.1 (via Ethernet0): ! [OK]
   
   Erasing device... eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
   eeeeeeeeeeeeee ...erased
   Loading /c2500-js-l.122-10b from 10.10.10.1 (via Ethernet0): 
   !!!!!!!!!!!!!!!!!!!
   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
   !!!!!!!
   [OK - 15694836/16777216 bytes]
   
   Verifying checksum... OK (0x58D2) 
   
   !--- System Image file has been successfully copied
   
   Flash copy took 0:07:37 [hh:mm:ss]
   %FLH: Re-booting system after download
   F3: 14732748+962056+889336 at 0x3000060
   
   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 FAR 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 Internetwork Operating System Software
   IOS (tm) 2500 Software (C2500-JS-L), Version 12.2(10b), 
   RELEASE SOFTWARE (fc1)
   Copyright (c) 1986-2002 by cisco Systems, Inc.
   ..........
   

5. 验证新的系统镜像的闪存在Router2。

   Router2#show flash   
   System flash directory:
   File Length Name/status
   1 15694836 /c2500-js-l.122-10b 
   
   !--- Cisco IOS image file has been copied
   
   [15694900 bytes used, 1082316 available, 16777216 total]
   16384K bytes of processor board System flash (Read ONLY)

   *The从闪存上运行系统的仅路由器重新加载。欲了解更详细的信息，请参阅复制对闪存关于从闪存上运行系统

注意： 通过使用TFTP，为了从一个设备复制Startup-config文件到另一个，请参见复制的配置文件。

相关信息

• 配置一个路由器作为TFTP server
• 移动文件和镜像在路由器和TFTP server之间通过SNMP
• 装载和维护系统镜像
• 技术支持和文档 - Cisco Systems