How enable ssh server on startup IOS 15.1 cisco 881

[SebastianBrehmer]

With IOS 12.4 it work with

!

ip ssh rsa keypair-name myRSAKey
ip scp server enable

!

but with IOS 15.1 it does not work. Because i want via ssh send a new config to router and it should ssh on after reboot.

Please help me Thanks lot.

[paolo bevilacqua]

Bug, contact TAC.

[SebastianBrehmer]

Now we have found the error. The NVRAM has an defect. he NVRAM do not Save the rsa keys.

So it is a Problem of the Hardware. I will hope that is the only device with this problem and not that cisco has a problem with a complete charge of Cisco 881 G- W Router.

Please give me feedback if anybody has the same Problems. Thanks to all.

[paolo bevilacqua]

It's unlikely that this is hardware problem.

This kind of bug is called "nvgen failure", and are quite frequent in IOS.

The only solution is a fix in IOS code.

[SebastianBrehmer]

We changed the IOS on our Cisco 881 to IOS 12.4. It does not work and also the 3G Modem is in this case not running.

On a secound Cisco with IOS 12.4 its work fine. So I think its a hardware problem.

If you are right it should be running after I change the IOS on the Router 881, but it does not work.

Please help me because we need a fast solution for this bug. Who are here responsible in this case ?

Have you contacts to someone who can fix this bug ?

Thanks for your answer and help.

[Richard Burts]

Sebastian

In a previous post you said:"Now we have found the error. The NVRAM has an defect. he NVRAM do not Save the rsa keys."

If this is because of a defect in NVRAM then this is a hardware issue, and the appropriate solution is ask Cisco to RMA the device.

It may be possible that this failure to save the RSA keys could be a software problem. But if you have gone back to a 12.4 version that is used without problem on a similar Cisco device, then I would guess that it is a hardware error and that the solution is to replace the device.

HTH

Rick

[paolo bevilacqua]

Once again:

Failure to preserve any configuration value in configuration, after a reload is a software bug. Not an hardware problem.

You need a support contract to contact Cisco TAC and complain about it.

[SebastianBrehmer]

I have seen that there is a new Version of IOS availabile ,c880data-universalk9-mz.151-3.T.bin, is in this IOS the bug with the SSH Server fixed ?

Did anybody know about that ?

I have at this time no answer from TAC.

Thanks for your answer.

[SebastianBrehmer]

Hello, now we have a solution. Before you configure the Router in detail you have to do following:

It can be that you have reset the Router before.

- change to enable modus

- change to conf t modus

type as example:

- crypto key generate rsa label myrsakey modulus 1024

and Enter.

Now the SSH server is enabled and started after reboot automatically.

Now you can configure in normal way the Router.

[paolo bevilacqua]

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