cisco 4948 交换机怎么破密码！！！ 求技术帝。。

Cisco 4500/4900 系列密码恢复

1.开机，按住ctrl+c 进入rommon 模式。显示如下（如没有进入rommon，关机重新试一次）
**********************************************************
* *
* Welcome to Rom Monitor for WS-C4948 System. *
* Copyright (c) 2003-2007 by Cisco Systems, Inc. *
* All rights reserved. *
* *
**********************************************************

Rom Monitor Program Version 12.2(31r)SGA2
Supervisor: WS-C4948 Chassis: WS-C4948
Hardware Revisions - Board: 6.0 CPLD: 5 Dagobah: 226

MAC Address : c8-4c-75-xx-xx-xx
Ip Address : Not set.
Netmask : Not set.
Gateway : Not set.
TftpServer : Not set.
Main Memory : 256 MBytes

***** The system will autoboot in 5 seconds *****

Type control-C to prevent autobooting.
. .
Autoboot cancelled......... please wait!!!
rommon 1 > [interrupt]

2．在rommon 提示符下，用confreg 命令实行密码恢复
rommon 1 >confreg

Configuration Summary :
=> load rom after netboot fails
=> ignore system config info
=> console baud: 9600
=> autoboot from: the first file from internal flash device

do you wish to change the configuration? y/n [n]: y
enable "diagnostic mode"? y/n [n]:
enable "use net in IP bcast address"? y/n [n]:
disable "load rom after netboot fails"? y/n [n]:
enable "use all zero broadcast"? y/n [n]:
enable "break/abort has effect"? y/n [n]:
disable "ignore system config info"? y/n [n]: y

change console baud rate? y/n [n]:

change the boot characteristics? y/n [n]:

Configuration Summary :
=> load rom after netboot fails
=> console baud: 9600
=> autoboot from: the first file from internal flash device

do you wish to save this configuration? y/n [n]: y
You must reset or power cycle for new configuration to take effect

rommon 2 >

3. reset 进入正常开机
rommon 2 >reset

Resetting .......

rommon 3 >

**********************************************************
* *
* Welcome to Rom Monitor for WS-C4948 System. *
* Copyright (c) 2003-2007 by Cisco Systems, Inc. *
* All rights reserved. *
* *
**********************************************************

Rom Monitor Program Version 12.2(31r)SGA2
Supervisor: WS-C4948 Chassis: WS-C4948
Hardware Revisions - Board: 6.0 CPLD: 5 Dagobah: 226

MAC Address : c8-4c-75-xx-xx-xx
Ip Address : Not set.
Netmask : Not set.
Gateway : Not set.
TftpServer : Not set.
Main Memory : 256 MBytes

***** The system will autoboot in 5 seconds *****

Type control-C to prevent autobooting.
. . . . .

******** The system will autoboot now ********

config-register = 0x2101

Autobooting using the first file from bootflash.....

Rommon reg: 0xE2004180
###########
k2diags version 5.2_d

prod: WS-C4948 part: 73-9130-11 serial: FOX1xxxxxxx

Power-on-self-test for Module 1: WS-C4948
Port/Test Status: (. = Pass, F = Fail, U = Untested)

Cpu Subsystem Tests ...
seeprom: . temperature_sensor: .

Port Traffic: 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: . 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: .

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: . 44: . 45: . 46: . 47: . 48: .
49: . 50: . 51: . 52: . 53: . 54: . 55: .

Module 1 Passed

Exiting to ios...

Rommon reg: 0xE2000180
###########################################
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 IOS Software, Catalyst 4500 L3 Switch Software (cat4500-IPBASE-M), Version 12.2(53)SG1, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2009 by Cisco Systems, Inc.
Compiled Fri 30-Oct-09 15:03 by prod_rel_team
Image text-base: 0x10000000, data-base: 0x11B917E8

cisco WS-C4948 (MPC8245) processor (revision 0) with 262144K bytes of memory.
Processor board ID FOX1406GBSS
MPC8245 CPU at 266Mhz, Fixed Module
Last reset from Reload
1 Virtual Ethernet interface
48 Gigabit Ethernet interfaces
511K bytes of non-volatile configuration memory.

Press RETURN to get started!

*Oct 25 21:35:20.583: �1�7K_IOSMODPORTMAN-4-POWERSUPPLYBAD: Power supply 1 has failed or been turned off
*Oct 25 21:35:29.459: %SPANTREE-5-EXTENDED_SYSID: Extended SysId enabled for type vlan
*Oct 25 21:35:31.595: �1�7K_IOSMODPORTMAN-6-MODULEONLINE: Module 1 (WS-C4948 S/N: FOX1xxxxxxxxx Hw: 1.7) is online
*Oct 25 21:35:31.943: %SYS-5-CONFIG_I: Configured from memory by console
*Oct 25 21:35:32.475: %SYS-5-RESTART: System restarted --
Cisco IOS Software, Catalyst 4500 L3 Switch Software (cat4500-IPBASE-M), Version 12.2(53)SG1, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2009 by Cisco Systems, Inc.
Compiled Fri 30-Oct-09 15:03 by prod_rel_team
Switch>

参考：
http://www.cisco.com/en/US/products/hw/switches/ps663/products_password_recovery09186a00800945f7.shtml