Yes, the link should be fine also for your 857 router. And yes, you will have to bring up the interfaces and possibly review the entire running configuration before you store it back to NVRAM. The reason is that the command copy startup-config running-config simply adds the commands in the startup-config to the commands already present in the factory-default running-config but it does not replace it.
You may also try using the command configure replace nvram:startup-config that is actually created to solve this very issue - it will perform all necessary additions and deletions to the running-config to make it identical to the startup-config. You should not need to make any further corrections after using this command (except, of course, setting the enable secret anew). However, this command is supported only in more recent IOSes and may not be available on your router - but giving it a try certainly won't harm.
Yes, you are correct. First, try the configure replace nvram:startup-config command and if that works, simply change the enable secret and store the configuration. If this command is not supported then use the copy startup-config running-config and after changing the enable secret, also make sure to activate all necessary interfaces.
In any case, you can make a backup of your current startup-config using the command
copy nvram:startup-config nvram:backup.txt
This will make a copy of your startup-config to the file backup.txt so you have a copy of it in case your modified configuration does not work as expected.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.