The Quidway R3600 is a low-end Huawei router. This is good for use at the access layer. The router was decommissioned but the configuration was not tampered with. Invariably, there is no record of the login username and password. It was to be used to deploy a solution
I had to login to the router as the bootrom since the password was null. I had seven options displayed and the third option was to clear the running configuration. Since it was an old router and no longer in use, it was okay to clear the configuration. Then I restarted the router and it was a clear of the initial configuration. Then, I was able to do a fresh configuration for the solution to be deployed.
It was a compact hardware and so there is no way of checking flash memory. It was easy to restart to check the bootrom and be assured that the hardware is in perfect condition.
However, the only way to bypass the password is going through the bootroom. By default for Quidway R3600 series routers, the default bootrom password is null.
My suggestion is that once a product is decommissioned, the login password should be saved somewhere for reference as the product may be needed later. Also, the login username and password can be cleared after decommissioning an equipment so as to give access to other engineers that might need it for later solution.