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3850交换机恢复IOS故障,启动失败

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发表于 2019-4-10 16:12:31 | 显示全部楼层 |阅读模式
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本帖最后由 custer0287 于 2019-4-10 16:14 编辑

一台3850的iOS无缘无故丢失,开机直接进入switch:模式,参考“Catalyst 3850 系列交换机升级、管理和恢复方法”这篇文档后,使用U盘恢复iOS,可恢复后仍然报启动失败的错误,无法进入正常模式,依旧直接进入switch:模式,请问是操作有误还是设备有故障了,或者还有什么方法可以尝试?具体的错误截图如下:



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发表于 2019-4-11 10:13:18 | 显示全部楼层
原版本是多少,新升级的版本是16.3.7,如果是从3.x升级到16.x版本需要区分捆绑模式或是安装模式,不同升级模式升级方式不同(3.x和16.x是两个大版本)。一定要按照官方的版本发生说明来升级,不然就会有幺蛾子出现。
1,Cisco Catalyst 3850系列交换机发行说明
https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3850/software/release/16-3/release_notes/ol-16-3-3850.html#pgfId-1165679
2,从软件故障中恢复指引https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3850/software/release/3se/system_management/configuration_guide/b_sm_3se_3850_cg/b_sm_3se_3850_cg_chapter_01110.html#task_1099467
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发表于 2019-4-12 00:00:32 | 显示全部楼层
英文社区中有个同样的问题,最终的解决办法是RMA,有条件的话直接开case吧。
https://community.cisco.com/t5/s ... -issue/td-p/3358989
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发表于 2019-6-22 22:25:22 | 显示全部楼层
可以看下这个链接:https://www.cisco.com/c/en/us/su ... ote-cat3850-00.html,其中的Emergency Recovery部分
Emergency Recovery

If the previous recovery methods fail, the 3850 Series Switches have a trap door method that you can use in order to recover the system. You must have a terminal that is connected to the management port of the switch that runs a TFTP server. Download a valid image file from CCO and store it in the root of the TFTP server.
It is likely that the switch is stuck at the switch: prompt. However, if you are in a boot loop, you can use the Mode button on the front of the switch in order to break the cycle: hold the button for approximately ten seconds, and the switch breaks the cycle and stops at the switch: prompt.
Complete these steps in order to perform an emergency recovery:
Set the switch IP address:

switch:  
set IP_ADDR 192.0.2.123/255.255.255.0
Set the default gateway:

switch:
set DEFAULT_ROUTER 192.0.2.1
Ping the terminal that contains the TFTP server in order to test the connectivity:

switch:
ping 192.0.2.1

ping 192.0.2.1 with 32 bytes of data ...
Host 192.0.2.1 is alive.
Verify that the emergency files exist in the switch file system:

switch:
dir sda9:

Directory of sda9:/

    2  drwx  1024       .
    2  drwx  1024       ..
   11  -rwx  18958824   cat3k_caa-recovery.bin
36903936 bytes available (20866048 bytes used)
Run the emergency install feature:

switch:
emergency-install tftp://192.0.2.1/cat3k_caa-universalk9.
SPA.03.03.00.SE.150-1.EZ.bin

The bootflash will be erased during install operation, continue (y/n)?Y
Starting emergency recovery (tftp://192.0.2.1/cat3k_caa-universalk9.
SPA.03.02.02.SE.150-1.EX2.bin)...
Reading full image into memory......................done
Nova Bundle Image
--------------------------------------
Kernel Address    : 0x6042f5d8
Kernel Size       : 0x317ccc/3243212
Initramfs Address : 0x607472a4
Initramfs Size    : 0xdc6546/14443846
Compression Format: .mzip

Bootable image at @ ram:0x6042f5d8
Bootable image segment 0 address range [0x81100000, 0x81b80000]
is in range [0x80180000, 0x90000000].
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@@@@@@@@@@@@@@@@@@@
File "sda9:cat3k_caa-recovery.bin" uncompressed and installed,
entry point: 0x811060f0
Loading Linux kernel with entry point 0x811060f0 ...
Bootloader: Done loading app on core_mask: 0xf

### Launching Linux Kernel (flags = 0x5)

Initiating Emergency Installation of bundle tftp://192.0.2.1/
cat3k_caa-universalk9.SPA.03.03.00.SE.150-1.EZ.bin

Downloading bundle tftp://192.0.2.1/ cat3k_caa-universalk9.
SPA.03.03.00.SE.150-1.EZ.bin...

Validating bundle tftp://192.0.2.1/ cat3k_caa-universalk9.
SPA.03.03.00.SE.150-1.EZ.bin...
Installing bundle tftp://192.0.2.1/ cat3k_caa-universalk9.
SPA.03.03.00.SE.150-1.EZ.bin...
Verifying bundle tftp://192.0.2.1/ cat3k_caa-universalk9.
SPA.03.03.00.SE.150-1.EZ.bin...
Package cat3k_caa-base.SPA.03.03.00.SE.pkg is Digitally Signed
Package cat3k_caa-drivers.SPA.03.03.00.SE.pkg is Digitally Signed
Package cat3k_caa-infra.SPA.03.03.00.SE.pkg is Digitally Signed
Package cat3k_caa-iosd-universalk9.SPA.150-1.EX2.pkg is Digitally Signed
Package cat3k_caa-platform.SPA.03.03.00.SE.pkg is Digitally Signed
Package cat3k_caa-wcm.SPA.10.0.111.0.pkg is Digitally Signed
Preparing flash...
Syncing device...
Emergency Install successful... Rebooting
Restarting system.
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