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New Member

Cannot write to const_nvram 6509 - Sup720

My IOS: s72033-ipservicesk9-mz.122-18.SXF12.bin

I cannot do a: "copy tftp const_nvram:vlan.dat"

After a successful tftp transfer, the switch immediately responds with an error to the effect of , "cannot write to const_nvram".

This command works with this IOS, "s72033-jk9sv-mz.122-18.SXD7b.bin"

Any help would be greatly appreciated!

thanks,

Jason

10 REPLIES
Blue

Re: Cannot write to const_nvram 6509 - Sup720

In order to restore the vlan.dat file, complete these steps:

Copy the vlan.dat file into the device's NVRAM from a TFTP server or an external PCMCIA card.

copy tftp: const_nvram:

notice no vlan.dat file name present...

Reload the switch, as vlan.dat is read only during the booting process.

HTH

Victor

New Member

Re: Cannot write to const_nvram 6509 - Sup720

Tried that and still have the same problem

Here is what I typed.

copy ttp: const_nvram:

I got:

"%Warning: There is a file already existing with this name Do you want to over write? [confirm]

Cannot copy from vlan.dat to vlan.dat"

New Member

Re: Cannot write to const_nvram 6509 - Sup720

Dear Jason:

   Did you happen to solve the problem? I am facing the same issue. Thanks.

New Member

Cannot write to const_nvram 6509 - Sup720

Hello,

Did you manage to solve this issue ? I am having the same, i tried with a

erase const_nvram before the reload but with no luck.

Thanks in advance

Silver

Cannot write to const_nvram 6509 - Sup720

Hi,

Can you please post the "dir const_nvram:" command output.

Thanks&Regards,

Antonin

New Member

Cannot write to const_nvram 6509 - Sup720

Hello Amikat,

Thanks for your reply, dir const_nvram says that vlan.dat

1     -rwx     0          vlan.dat

I also did a

Chassis#erase const_nvram

Erasing the const_nvram filesystem will remove all configuration files! Continue? [confirm]

[OK]

Erase of const_nvram: complete

Chassis#reload

//output....

but no chances, i get :

User Access Verification

Password:

Chassis>en

Chassis#copy bootflash:vlan.dat const_nvram:vlan.dat

Destination filename [vlan.dat]?

%Warning:There is a file already existing with this name

Do you want to over write? [confirm]

Cannot copy from vlan.dat to vlan.dat

Chassis#exit

Thanks you in advance if you have any ideas...

best regards

Silver

Cannot write to const_nvram 6509 - Sup720

Hi,

Thanks for the reply.

Can you please try to use the command "delete const_nvram:vlan.dat" instead of "erase ..." and if succeed reload the switch and try again the "copy ..." command and see if there is any progress.

Best regards,

Antonin

New Member

Cannot write to const_nvram 6509 - Sup720

Hi again, same issu when I use the delete command... I will make some tests today and let you know, I did follow the Cisco procedure, i do have all expected output (reset of the VLAN & VTP configuration) but still no way to copy the file.

I will keep you informed, regards

Silver

Cannot write to const_nvram 6509 - Sup720

Hi,

Thanks for the reply.

What is you vtp status? I would suggest to set it to "client" before deleting the vlan.dat.

Best regards,

Antonin

New Member

Cannot write to const_nvram 6509 - Sup720

Hi

I tried to change the vtp status, no chance. I did upgrade the chassis to the same version as the originate vlan.dat, and that worked fine.

According to the TAC, this is not a software version issue, bug this might be bug

CSCsj71192.

VSL : Unable to replace vlan.dat file with Sierra image.

Symptom:

Unable to replace vlan.dat file

Conditions:

When attempting to copy vlan.dat file from disk0: to nvram: the copy is blocked and the console displays the error message "Cannot copy from vlan.dat to vlan.dat"

Workaround:

Downgrade to 12.2(18)SXF7 or upgrade to a release that integrates the fix.

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