Question

编辑 - 解决方案是在新格式化的闪存卡上使用不同的IOS版本。由于IOS不匹配，这会强制配置退出路由器。您可以从此处自由进行任何配置，因为路由器将被擦除。

我正在尝试恢复2911路由器。我擦了它的配置，它回来了要求启用密码。它应该有cisco / cisco密码，它应该为您提供更改它们的选项。就好像这被跳过了。我认为这没什么大不了的，但它似乎已经有效地阻止了我的路由器。删除闪存会导致如下所示的引导循环：

System Bootstrap, Version 15.0(1r)M14, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 2011 by cisco Systems, Inc.

Total memory size = 512 MB - On-board = 512 MB, DIMM0 = 0 MB
Field Upgradeable ROMMON Integri_________________
ROM: Digitally Signed Release Software
CISCO2911/K9 platform with 524288 Kbytes of main memory
Main memory is configured to 72/-1(On-board/DIMM0) bit mode with ECC enabled


Upgrade ROMMON initialized
PASSWORD RECOVERY FUNCTIONALITY IS DISABLED
Compact Flash0: Not present

System Bootstrap, Version 15.0(1r)M14, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 2011 by cisco Systems, Inc.

Total memory size = 512 MB - On-board = 512 MB, DIMM0 = 0 MB
Field Upgradeable ROMMON Integri_________________
ROM: Digitally Signed Release Software
CISCO2911/K9 platform with 524288 Kbytes of main memory
Main memory is configured to 72/-1(On-board/DIMM0) bit mode with ECC enabled


Upgrade ROMMON initialized
PASSWORD RECOVERY FUNCTIONALITY IS DISABLED
Compact Flash1: Not present

System Bootstrap, Version 15.0(1r)M14, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 2011 by cisco Systems, Inc.

Total memory size = 512 MB - On-board = 512 MB, DIMM0 = 0 MB
Field Upgradeable ROMMON Integri_________________
ROM: Digitally Signed Release Software
CISCO2911/K9 platform with 524288 Kbytes of main memory
Main memory is configured to 72/-1(On-board/DIMM0) bit mode with ECC enabled


Upgrade ROMMON initialized
PASSWORD RECOVERY FUNCTIONALITY IS DISABLED
Compact Flash0: Not present

尝试在启动时破坏似乎没有做任何事情。我使用的是putty，中断顺序应该是Ctrl / Break。看看putty的日志显示它实际上正在发送一个中断序列。

如果我允许路由器启动它将尝试和tftp到255.255.255.255地址，这是一个明确的迹象表明它没有配置。我的问题是，是否有办法重置路由器，或者是否有一个配置文件，我可以放到闪存上，这将允许我启动到实际配置。

与往常一样，非常感谢任何帮助。

非常尊重，

Adam Walker

Answer 1

我自己没有经历这个，但似乎如果你在恰当的时刻点击了ctrl / break，它应该允许你根据这个链接重置为出厂默认值（这适用于更老的ios和路由器）;

http://www.tunnelsup.com/recovering-the-password-when-no-service-password-recovery-is-enabled-on-a-router

虽然Ivan Peplnjk认为在禁用密码恢复后某些情况下可能无法从中恢复...

http://blog.ipspace.net/2007/12/recovering-from-disabled-password.html

...对于3600，思科建议您坚持使用闪存卡上的新IOS映像。

www.cisco.com/c/en/us/support/docs/routers/3600-series-multiservice-platforms/46104-no-service-pswdrec.html#risks

希望这有帮助。

的问候，格里

Cisco 2911 - 禁用密码恢复功能。需要重置为默认值

1 个答案: