Cisco　2600　密码和设置重新初始化?--浮尘_

Cisco 2600 密码和设置重新初始化?

[ 2007-9-18 21:30:00 | By: Jelly ]

原来使用新的Cisco设备,没有使用二手的.在实际的操作中，看一些资料有时候会手忙脚乱的!CCNA的知识也不覆存在,其实很多情况下,把自己的思路整理一下,即可把问题解决!

源起:

前两天拿到一个Cisco 2600 Series (2610)的设备,此设备的硬件部分请查询相关的列表,仅增加一块WICs（WAN Interface Cards,）卡，在Interface s0 Slot 上.

此设备考虑到没有什么需要将原来配置留下,于是乎,将其重新设置,清空重来!

清除的动作:

1.配置一个Terminal,其实是一个超级终端:每位秒数:9600;数据位:8;奇偶校验位:无;停止位:1;数据流控制:无;

2.用COM接Cisco 设备的console,确认后,打开Cisco设备(我这种方法好像有点儿违反先开周边设备,再打开主机的做法);

Cisco 一边启动,一边用PC键盘按Ctrl+Break键,直到出现:

rommon>为止,这说明,进行了Cisco 设备的另一个特模式吧,如果你对Sun SPARC比较熟悉,就当是Sun OK Pormpt吧!

3.在rommon>下输入confreg;

整个演示过程如下:

系统启动信息：System Bootstrap, Version 12.2(6r), RELEASE SOFTWARE (fc1)
TAC Support: http://www.cisco.com/tac
Copyright (c) 2001 by cisco Systems, Inc.
PC = 0xfff0ac0c, Vector = 0x500, SP = 0x68012758
PC = 0xfff0ac0c, Vector = 0x500, SP = 0x680127c0
C2600 platform with 32768 Kbytes of main memory

PC = 0xfff0ac0c, Vector = 0x500, SP = 0x80004884

在键盘上输入：Ctrl+Break 显示的信息：monitor: command "boot" aborted due to user interrupt
rommon 1 >confreg
Configuration Summary
(Virtual Configuration Register: 0x2101)
enabled are:
load rom after netboot fails
console baud: 9600
boot: the boot helper image

do you wish to change the configuration? y/n [n]: y #一定要输入yes
enable "diagnostic mode"? y/n [n]: n
enable "use net in IP bcast address"? y/n [n]: n
disable "load rom after netboot fails"? y/n [n]: n
enable "use all zero broadcast"? y/n [n]: n
enable "break/abort has effect"? y/n [n]: n
enable "ignore system config info"? y/n [n]: y #一定要输入yes
change console baud rate? y/n [n]: n
change the boot characteristics? y/n [n]: n

Configuration Summary
(Virtual Configuration Register: 0x2141)
enabled are:
load rom after netboot fails
ignore system config info
console baud: 9600
boot: the boot helper image

do you wish to change the configuration? y/n [n]:

如果在这里输入y，你会发现：上面的选择项里，有一项的值有所变化：

enable "ignore system config info"? y/n [n]: 这一行，由原来的这个值，变为另一个值：

disable “ignore system config info”?y/n [n]:

我们在此输入：no

do you wish to change the configuration? y/n [n]: n

You must reset or power cycle for new config to take effect
rommon 3 > reset

4.系统再次重启:

直这到这里结束:

--- System Configuration Dialog ---

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

这里输入yes

依次需要输入的选择项有:

Would you like to enter basic management setup? [yes/no]: yes

Enter host name [Router]: JellyR #路由器名称

Enter enable secret: Jelly1 #进入特权时的密码；

Enter enable password: Jelly2 #进入特权时的密码；

Enter virtual terminal password: Jelly3 #vty时的密码

Configure SNMP Network Management? [yes]:no #在这里我输入no

Configure IP on this interface? [yes]: yes

IP address for this interface: 192.168.10.200

Subnet mask for this interface [255.255.255.0] :

Class C network is 192.168.10.0, 24 subnet bits; mask is /24

当现现:

[0] Go to the IOS command prompt without saving this config.

[1] Return back to the setup without saving this config.

[2] Save this configuration to nvram and exit.

Enter your selection [2]:2 #这里选择2，系统保存并重新启动；

JellyR>en

Password: #输入Jelly1,即特权模式的密码；

到此，密码的初始化已经完成，系统需要一个全新的配置，包括IP等一类的信息；

JellyR#wr mem

JellyR#reload #重新启动，你会发现如下问题：

最后,系统每次启动都到system configuration dialog,为止，

Configuration Summary
(Virtual Configuration Register: 0x2141)
enabled are:
load rom after netboot fails
ignore system config info
console baud: 9600
boot: the boot helper image

do you wish to change the configuration? y/n [n]:

如果如此，请输入no；

在此你会发现，以上显的示的信息与第一次系统启动rommon时的信息不同：第一次启动rommon>模式时如下：

rommon 1 >confreg
Configuration Summary
(Virtual Configuration Register: 0x2101) #注意这里的变化；
现在的信息：

(Virtual Configuration Register: 0x2141) #注意这里的变化；
在JellyR>下输入en，进入Jelly>#下，此时也不需要密码；原来配置都无效啦吗？不然。

Router#show version

Cisco Internetwork Operating System Software

IOS (tm) C2600 Software (C2600-I-M), Version 12.2(2)T4, RELEASE SOFTWARE (fc3)

TAC Support: http://www.cisco.com/tac

Compiled Sun 10-Feb-02 05:50 by yiyan

Image text-base: 0x80008088, data-base: 0x809D6E44

ROM: System Bootstrap, Version 12.2(6r), RELEASE SOFTWARE (fc1)

Router uptime is 0 minutes

System returned to ROM by reload

System image file is "flash:c2600-i-mz.122-2.T4.bin"

cisco 2610 (MPC860) processor (revision 0x00) with 28672K/4096K bytes of memory.

Processor board ID JAD06100GY1 (406680486)

M860 processor: part number 0, mask 49

Bridging software.

X.25 software, Version 3.0.0.

1 Ethernet/IEEE 802.3 interface(s)

1 Serial network interface(s)

32K bytes of non-volatile configuration memory.

8192K bytes of processor board System flash (Read/Write)

Configuration register is 0x2142 #注意这里的变化；

Router#

问题就出在这里：

接着执行如下命令即可：

Router＃c onfigure terminal

Route(config)＃c onfig-register 0x2101

Route(config)#end

Route# wr mem

Route#reload

再次重启后，你会发现，系统到了正常的状态；

JellyR>出现了，

在JellyR>en

Password:

JellyR#显示正常了！

不过，此时仍然会发现，工作站无法ping通路由器，这是因为默认的路由器的端口是关闭的，做如下操作即可：

JellyR＃c onfigure terminal

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

JellyR(config)#interface ethernet 0/0

JellyR(config-if)#no shutdown

JellyR(config-if)#

系统显示：00:02:48: %LINK-3-UPDOWN: Interface Ethernet0/0, changed state to up

系统显示：00:02:49: %LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet0/0, changed s

系统显示：tate to up

JellyR(config-if)#end

JellyR#

系统显示：00:05:04: %SYS-5-CONFIG_I: Configured from console by console

JellyR#wr mem

Building configuration...

[OK]

JellyR#copy run

JellyR#copy running-config sta

JellyR#copy running-config startup-config

Destination filename [startup-config]?

Building configuration...

[OK]

JellyR#

wr mem 和 copy running-config startup-config 的目的相同；保存当前的配置；