I need to completely change configurations on a 3900 router at a remote site. I am going to remote into the device, tftp a file into flash, then clear the startup.config with a write erase. I will then copy the new config into startup, the new config will have a new name and domain-name. Then I will reload.
Will the old crypto key carry over into the new config? Otherwise, SSH will fail and I'll be locked out.
Please explain when and how the crypto key rsa gets flushed.