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Why lose a router settings after a power outage?

yesenia-m
Beginner
Beginner

Hi Team

After a power outage lost my router configuration, was saved, reload the configuration, save, reboot and no problem.

How to know if my router is properly, all my services run smoothly? Why it happens that configuration is lost?

Are there any benefits the settings saved in flash?

Thank you

Regards

1 Accepted Solution

Accepted Solutions

Hi Yesenia,

Did you check if the NVRAM was empty or running config was empty?

If router booted with empty running config, it could be that startup got erased (NVRAM issue) or that it did not load it from startup to running (likely config-reg) issue.

Since in your case config-register ix 0x2102 and was not changed, the problem should be with NVRAM.

From me exprience, I have seen that in the following cases:

- config was not saved to NVRAM;

- at the time of powerdown the NVRAM startup file was accessed for editing (e.g. saving running config) and got corrupted or erased;

- NVRAM HW issues cause file system problems.

Is it reproducible in your case? E.g. if you powercycle the switch, do you see the same problem with config loss? If yes, check the NVRAM content.  That could give some hints.

Kind Regards,
Ivan Shirshin

**Please grade this post if you find it useful.

Kind Regards,
Ivan

View solution in original post

6 Replies 6

Alessio Andreoli
Contributor
Contributor

Hi Yesenia,

you should check the value of your register with:

show version

it should be on most of the routers 0x2102

Hope this helps

Alessio

Hi Alessio

I have reviewed the register value, which is 0x2102.

My question is why this happens, because the configuration is lost after a power outage

Thank you