Your question is too open. You don't look like you've done your homework which is the quickest way to not get a response on this forum. Figure some stuff out first:
- What type of DNS server do you run now (the server that will be the master)? Do you host it? What is the platform it runs on?
- Do you want to stick with the same DNS server for the slave? If not, what? There are plenty to choose from. What platform will it run on?
The DNS server you choose and the platform it runs on will need to be determined before you can ask what configuration you need. Also, any DNS server is going to have documentation and a user community that would be your first resources for information on how to set it up.