Write command

[miracle_david@yahoo.com]

Hi gentlemen,

What's the different between "write erase" & "erase startup-config" comands?

With which command I can erase all of my configurations?

Thanks

[Martin L]

both will do the same thing; erase start config; all you have left is running config.  to save running to start up, do write again or copy run start

Regards, ML
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[luis_cordova · Accepted solution]

Hi miracle_david@yahoo.com 

The commandments do the same function.
It seems to me that the difference is in the age of the commands.
If I'm not wrong, the oldest is erase write and the most recent is erase nvram.
It is possible that some IOS some command is not supported, so it is good to have these 3 options in mind.

https://books.google.cl/books?id=eeYyDAAAQBAJ&pg=PT288&lpg=PT288&dq=write+erase+vs+erase+startup-config&source=bl&ots=Ccwhnjoyhp&sig=ACfU3U27Djc3_YgJzyN_Y9FxmG_zEgdVkw&hl=es-419&sa=X&ved=2ahUKEwi52rHO54vqAhUjHbkGHaHJCuw4FBDoATAEegQIDBAB#v=onepage&q=w...

Regards

[Joseph W. Doherty]

As noted by the others, they really perform the same, but as noted by Luis, having two commands do the same thing really is due to the age of the commands. If I remember correct, some later Cisco documentation notes there's intent to deprecate the write command, but I suspect that has yet not happened because using "wr" to save the running config to start up, I believe, is very popular.