cisco路由器的密碼
怎么解除cisco路由器的密碼?互聯(lián)網(wǎng)規(guī)模的不斷擴(kuò)大以及各種大數(shù)據(jù)量業(yè)務(wù)的出現(xiàn)對(duì)路由器分組處理能力的要求大大提高。路由器不再是簡(jiǎn)單的轉(zhuǎn)發(fā)報(bào)文，還需要在處理過(guò)程中考慮服務(wù)質(zhì)量、流量整型、預(yù)測(cè)和防止網(wǎng)絡(luò)擁塞等問(wèn)題。下面就由學(xué)習(xí)啦小編來(lái)給大家說(shuō)說(shuō)怎么解除cisco路由器的密碼吧，歡迎大家前來(lái)閱讀!
怎么解除cisco路由器的密碼
解除密碼原則 只刪除密碼不破壞配置
1 重啟 路由器 按 ctrl + pause break 鍵 進(jìn)入mini IOS
2 修改寄存器值改變啟動(dòng)次序
rommon 1 > confreg 0x2142
3 在mini IOS下重啟路由
rommon 2 > reset
System Bootstrap, Version 12.1(3r)T2, RELEASE SOFTWARE (fc1)
Copyright (c) 2000 by cisco Systems, Inc.
cisco 2621 (MPC860) processor (revision 0x200) with 60416K/5120K bytes of memory
Self decompressing the image :
########################################################################## [OK]
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) C2600 Software (C2600-I-M), Version 12.2(28), RELEASE SOFTWARE (fc5)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2005 by cisco Systems, Inc.
Compiled Wed 27-Apr-04 19:01 by miwang
cisco 2621 (MPC860) processor (revision 0x200) with 60416K/5120K bytes of memory
.
Processor board ID JAD05190MTZ (4292891495)
M860 processor: part number 0, mask 49
Bridging software.
X.25 software, Version 3.0.0.
2 FastEthernet/IEEE 802.3 interface(s)
2 Low-speed serial(sync/async) network interface(s)
32K bytes of non-volatile configuration memory.
16384K bytes of processor board System flash (Read/Write)
--- System Configuration Dialog ---
Continue with configuration dialog? [yes/no]: n
Press RETURN to get started!
Router>
看這里進(jìn)入系統(tǒng)之后 直接就進(jìn)入了用戶(hù)模式 沒(méi)要密碼
Router>en
Router#copy start run
Destination filename [running-config]?
552 bytes copied in 0.416 secs (1326 bytes/sec)
ru1#
我們 輸入enable 進(jìn)入特權(quán)模式 輸入命令 copy start run 從NVRAM 里面調(diào)用配置到內(nèi)存中
下一步更換密碼
ru1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
ru1(config)#line console 0
ru1(config-line)#pass admin
ru1(config-line)#login
ru1(config-line)#exit
ru1(config)#line vty 0 4
ru1(config-line)#pass admin
ru1(config-line)#login
ru1(config-line)#exit
ru1(config)#enable pass admin
ru1(config)#enable secret admin
ru1(config)#service password-encryption
比如說(shuō)我們將密碼修改為admin 實(shí)驗(yàn)環(huán)境下 只采用這一個(gè)密碼
下一步 更改寄存器值 恢復(fù)到正常的啟動(dòng)次序
ru1(config)#config-register 0x2102
下一步 保存配置到NVRAM里面
ru1(config)#exit
%SYS-5-CONFIG_I: Configured from console by console
ru1#copy run start
Destination filename [startup-config]?
Building configuration...
[OK]
ru1#
重啟一下
ru1#rel
Proceed with reload? [confirm]
%SYS-5-RELOAD: Reload requested by console. Reload Reason: Reload Command.
System Bootstrap, Version 12.1(3r)T2, RELEASE SOFTWARE (fc1)
Copyright (c) 2000 by cisco Systems, Inc.
cisco 2621 (MPC860) processor (revision 0x200) with 60416K/5120K bytes of memory
Self decompressing the image :
########################################################################## [OK]
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) C2600 Software (C2600-I-M), Version 12.2(28), RELEASE SOFTWARE (fc5)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2005 by cisco Systems, Inc.
Compiled Wed 27-Apr-04 19:01 by miwang
cisco 2621 (MPC860) processor (revision 0x200) with 60416K/5120K bytes of memory
.
Processor board ID JAD05190MTZ (4292891495)
M860 processor: part number 0, mask 49
Bridging software.
X.25 software, Version 3.0.0.
2 FastEthernet/IEEE 802.3 interface(s)
2 Low-speed serial(sync/async) network interface(s)
32K bytes of non-volatile configuration memory.
16384K bytes of processor board System flash (Read/Write)
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to up
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to administratively down
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to down
%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to administratively down
Press RETURN to get started!
User Access Verification
Password:
ru1>en
Password:
ru1#