Cisco 2911 - 密码恢复功能已禁用。需要重置为默认值

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，这会强制配置出路由器。从现在开始您可以自由进行任何配置，因为路由器将被擦除。

我正在尝试恢复我的 2911 路由器。我擦除它的配置，它回来要求启用密码。它应该有 cisco/cisco 密码，并且应该让您可以选择更改它们。就好像这被跳过了一样。我认为这没什么大不了的，但它似乎有效地使我的路由器变砖了。移除闪存会导致启动循环，如下所示：

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

同时尝试在启动时中断似乎没有任何作用。我正在使用腻子，中断顺序应该是 Ctrl/Break。查看 putty 的日志表明它实际上正在发送中断序列。

如果我允许路由器启动，它会尝试通过 tftp 传输到 255.255.255.255 地址，这是它没有配置的明确标志。我的问题是是否有重置路由器的方法，或者是否有一个配置文件可以放到闪存上，使我能够启动到实际配置。

一如既往，非常感谢您的帮助。

非常恭敬，

亚当·沃克

Answer 1

我自己没有经历过，但似乎如果你在正确的时刻点击 ctrl/break 它应该允许你根据这个 link 重置为出厂默认设置（这是为了更旧的 ios 和路由器);

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

尽管 Ivan Peplnjk 认为一旦禁用密码恢复，在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，Cisco 建议您在闪存卡上粘贴一个新的 IOS 图像。

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

希望对您有所帮助。

此致，格里

Cisco 2911 - 密码恢复功能已禁用。需要重置为默认值

Cisco 2911 - Password Recovery Functionality Disabled. Need to Reset to defaults

password-recovery

cisco-ios