思科路由器怎么改改配置(思科路由器、交换机密码恢复)

Posted 2023-05-26

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思科路由器怎么改改配置(思科路由器、交换机密码恢复)

2600、3600等新系列路由器步骤：

1、启动路由器，60秒内按下ctrl+break键

2、rommon>confreg 0x2142

3、rommon>reset

4、router#copy startup-config running-config

5、router(config)#no enable secrect //可以删除密码也可以更改,这里为删除

6、router(config-line)#no enable password

7、router#copy running-config startup

8、router(config)#config-register 0x2102

9、router#reload

2500系列路由器步骤：

1、启动路由器，60秒内按下ctrl+break键

2、>o/r 0x2142

3、>i

其余步骤跟2600、3600一样

2．交换机密码恢复（以2950为例）

重起交换机：按MODE键进入到switch:模式如下

C2950 Boot Loader (C2950-HBOOT-M) Version 12.1(11r)EA1, RELEASE SOFTWARE (fc1)

Compiled Mon 22-Jul-02 17:18 by antonino

WS-C2950-24 starting...

Base ethernet MAC Address: 00:13:1a:9a:2b:80

Xmodem file system is available.

The system has been interrupted prior to initializing the

flash filesystem. The following commands will initialize

the flash filesystem, and finish loading the operating

system software:

flash_init

load_helper

boot

switch: flash_init

Initializing Flash...

flashfs[0]: 4 files, 1 directories

flashfs[0]: 0 orphaned files, 0 orphaned directories

flashfs[0]: Total bytes: 7741440

flashfs[0]: Bytes used: 3090944

flashfs[0]: Bytes available: 4650496

flashfs[0]: flashfs fsck took 6 seconds.

...done initializing flash.

Boot Sector Filesystem (bs:) installed, fsid: 3

Parameter Block Filesystem (pb:) installed, fsid: 4

switch: load_helper

switch: dir

List of filesystems currently registered:

flash[0]: (read-write)

xmodem[1]: (read-only)

null[2]: (read-write)

bs[3]: (read-only)

switch: dir flash:

Directory of flash:/

2 -rwx 736 <date> vlan.dat

3 -rwx 3086336 <date> c2950-i6q4l2-mz.121-22.EA2.bin

5 -rwx 1558 <date> config.text ／／交换机启动时应用的配置

6 -rwx 5 <date> private-config.text

4650496 bytes available (3090944 bytes used)

switch: rename flash:config.text flash:config-old.txt //重命名config.text

switch: reset //重起交换机

Are you sure you want to reset the system (y/n)?y

System resetting...

重起交换机后由于交换机不会再应用配置文件，因为刚才已把配置文件的名字更改。交换机会进入到配置的对话模式。如查

--- System Configuration Dialog ---

Would you like to enter the initial configuration dialog? [yes/no]: n

Switch#dir

Directory of flash:/

2 -rwx 736 Mar 01 1993 00:19:14 +00:00 vlan.dat

3 -rwx 3086336 Jan 01 1970 01:12:26 +00:00 c2950-i6q4l2-mz.121-22.EA2.bin

5 -rwx 1558 Mar 01 1993 02:36:44 +00:00 config-old.txt

6 -rwx 5 Mar 01 1993 02:36:44 +00:00 private-config.text

7741440 bytes total (4650496 bytes free)

Switch#copy config-old.txt running-config

Destination filename [running-config]?

1558 bytes copied in 1.152 secs (1352 bytes/sec)

sw#config t

Enter configuration commands, one per line. End with CNTL/Z.

sw(config)#line console 0

sw(config-line)#no pass cisco ／／清除console口密码

sw(config)#no enable secret ／／清除enable密码

sw(config)#no enable password ／／清除enable密码

sw#write //重新保存

以为密码删除成功，很多情况下你可以不删除，就直接更改就OK了。