Generate Self-Signed Certificate on EX series

Hello guys,

I want to generate new self-signed certifiactes on my EX2300-series switches.

I found this document:

http://www.juniper.net/techpubs/en_US/junos/topics/task/configuration/certificate-self-signed-manually-generating-switch-cli.html

I thought this should be easy, but I don't know what this here means:

subject-of-distinguished-name

When I write down the name of the switch or something else, I get an error.

So, what do I have to write there? Could you please give me an example?

Thanks and kind regards

gp83.