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Lucien Avramov
Advocate
Advocate

 

This videos shows how to restore a Cisco Nexus 5000/2000 series or Cisco Nexus 3000 series switch from the loader> prompt.

 

Summary steps:

-load kickstart from TFTP server, when not present on bootflash:

-copy kickstart and system images from a TFTP/FTP server

-load system image

-finish the install with install all

25 Comments
prasadchwdry
Beginner
Beginner

Did you able to resolve you issue??? I do have the same problem. It got stuck in booting mode and not moving forward. Any suggestions please.

prasadchwdry
Beginner
Beginner

Hi Lucien,

I trying to recover the image from TFTP server, when i ran the boot from TFTP server it got stuck in booting prompt. I waited like half hour but no luck. Any suggestions please.

How do i know is it really booting or it got stuck here???

loader> boot tftp://10.1.220.254/TFTP/n5000-uk9-kickstart.5.2.1.N1.8b.bin
Address: 10.1.220.253
Netmask: 255.255.255.0
Server: 10.1.220.254
Gateway: 10.1.220.254
Booting: /TFTP/n5000-uk9-kickstart.5.2.1.N1.8b.bin console=ttyS0,9600n8nn quiet
 loader_ver="pr-1.3"....

naveenvictory647
Beginner
Beginner

hi my nexus got stuck in loader promt ..i dont have the image s tried to download it from cisco website asking for contract details which i dont have ..i gave sn no looks like warrenty is expired 

please can some body provide the images it will be helpfull for me 

Thanks 

Seth Hendrix
Beginner
Beginner

I'm having this same issue. I just put the laptop in the rack and hope it resolves itself overnight.

Did you ever come to a conclusion on this?

shendrix1985
Beginner
Beginner

I'm having a different issue now, but this problem was caused by having the port my laptop and mgmt port set to "switchport mode trunk" instead of "switchport access vlan ##".

M-a-h-i
Beginner
Beginner

Hi All,

 

Here is the solution and checks if you face tftp get operation failed at switch(boot).

 

>If your device in switch (boot) and you are trying to copy the image from TFTP server .

  Check the ping rechablity between your device and TFTP server (In loader prompt ping wont work    whereas in switch(boot) it will work. 

>Check the path between the device and TFTP server, Make sure no issues in the path. 

++++++++++++

ON DEVICE:

++++++++++++

>Check the Ip address ---->switch(boot)#sh ip

>Check the mgmt 0 int status---> switch(boot)#sh int

  >>If Mgmt 0 down, goto configuration mode and enable it

     >>>switch(boot)#conf ter

     >>>switch(boot)#int mgmt 0

     >>>switch(boot)#no shut

>Try to copy the code, If you still facing the tftp get operation failed

 >>Check the default gateway and enable routing

     >>>switch(boot)#conf ter

     >>>switch(boot)#ip default-gateway X.X.X.X

     >>>switch(boot)#ip routing

 >Try to copy the code now, It will work.

Cisco_Bob
Beginner
Beginner

I got the same issue because the 3548-X has no kickstart or image. Does anyone know if you can use the usb1: or usb2: to boot the kickstart from loader mode? Or with a 3K is TFTP is the only way to boot the kickstart is though TFTP?

boythanhdat_2012
Beginner
Beginner

Note: I can't ping from tftp or ftp to mgmt0 in (boot) mode (although, in loader> I can).

 

>>> Solution: assign ip address again in mgmt0 in boot mode. 

Config ter

int m0

ip add x.x.x.x

no shut

exit

 

dmcgrath.ca
Beginner
Beginner

Just for search-ability on an issue I ran into with this on a Ubuntu server.

I was getting some "Error 25: Disk read error", which seemed to be grub related, which would result is a truncated file image download every time I would try to copy from tftp://. The issue being that the kickstart files are just a hair over 32MB. It seems that the tftpd I was using doesn't support RFC2348, which limits tftp to 64k x 512b blocks, or 32mb. The RFC2348 allows the blocks up to 64k as well, which yields a 4GB filesize.

I found that in Ubuntu, the aftpd was a drop in replacement, and it "just works (tm)".

 

Enjoy!

switch(boot)# copy ftp: bootflash:
Enter source filename: n5000-uk9-kickstart.5.0.3.N2.2.bin
Enter hostname for the ftp server: 192.168.88.100
Enter username: test

 

 

( Stuck in username no get the password )

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